diff --git a/shell/platform/linux/fl_engine.cc b/shell/platform/linux/fl_engine.cc
index b45ef05f07d30..30524a83c78cc 100644
--- a/shell/platform/linux/fl_engine.cc
+++ b/shell/platform/linux/fl_engine.cc
@@ -73,8 +73,6 @@ G_DEFINE_TYPE_WITH_CODE(
     G_IMPLEMENT_INTERFACE(fl_plugin_registry_get_type(),
                           fl_engine_plugin_registry_iface_init))
 
-enum { PROP_0, PROP_BINARY_MESSENGER, PROP_LAST };
-
 // Parse a locale into its components.
 static void parse_locale(const gchar* locale,
                          gchar** language,
@@ -353,22 +351,6 @@ static void fl_engine_plugin_registry_iface_init(
   iface->get_registrar_for_plugin = fl_engine_get_registrar_for_plugin;
 }
 
-static void fl_engine_set_property(GObject* object,
-                                   guint prop_id,
-                                   const GValue* value,
-                                   GParamSpec* pspec) {
-  FlEngine* self = FL_ENGINE(object);
-  switch (prop_id) {
-    case PROP_BINARY_MESSENGER:
-      g_set_object(&self->binary_messenger,
-                   FL_BINARY_MESSENGER(g_value_get_object(value)));
-      break;
-    default:
-      G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
-      break;
-  }
-}
-
 static void fl_engine_dispose(GObject* object) {
   FlEngine* self = FL_ENGINE(object);
 
@@ -415,15 +397,6 @@ static void fl_engine_dispose(GObject* object) {
 
 static void fl_engine_class_init(FlEngineClass* klass) {
   G_OBJECT_CLASS(klass)->dispose = fl_engine_dispose;
-  G_OBJECT_CLASS(klass)->set_property = fl_engine_set_property;
-
-  g_object_class_install_property(
-      G_OBJECT_CLASS(klass), PROP_BINARY_MESSENGER,
-      g_param_spec_object(
-          "binary-messenger", "messenger", "Binary messenger",
-          fl_binary_messenger_get_type(),
-          static_cast<GParamFlags>(G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY |
-                                   G_PARAM_STATIC_STRINGS)));
 }
 
 static void fl_engine_init(FlEngine* self) {
@@ -433,6 +406,7 @@ static void fl_engine_init(FlEngine* self) {
   FlutterEngineGetProcAddresses(&self->embedder_api);
 
   self->texture_registrar = fl_texture_registrar_new(self);
+  self->binary_messenger = fl_binary_messenger_new(self);
 }
 
 FlEngine* fl_engine_new(FlDartProject* project, FlRenderer* renderer) {
@@ -442,7 +416,6 @@ FlEngine* fl_engine_new(FlDartProject* project, FlRenderer* renderer) {
   FlEngine* self = FL_ENGINE(g_object_new(fl_engine_get_type(), nullptr));
   self->project = FL_DART_PROJECT(g_object_ref(project));
   self->renderer = FL_RENDERER(g_object_ref(renderer));
-  self->binary_messenger = fl_binary_messenger_new(self);
   return self;
 }
 
@@ -549,7 +522,7 @@ gboolean fl_engine_start(FlEngine* self, GError** error) {
   setup_locales(self);
 
   g_autoptr(FlSettings) settings = fl_settings_new();
-  self->settings_plugin = fl_settings_plugin_new(self);
+  self->settings_plugin = fl_settings_plugin_new(self->binary_messenger);
   fl_settings_plugin_start(self->settings_plugin, settings);
 
   result = self->embedder_api.UpdateSemanticsEnabled(self->engine, TRUE);
@@ -871,14 +844,3 @@ G_MODULE_EXPORT FlTextureRegistrar* fl_engine_get_texture_registrar(
   g_return_val_if_fail(FL_IS_ENGINE(self), nullptr);
   return self->texture_registrar;
 }
-
-void fl_engine_update_accessibility_features(FlEngine* self, int32_t flags) {
-  g_return_if_fail(FL_IS_ENGINE(self));
-
-  if (self->engine == nullptr) {
-    return;
-  }
-
-  self->embedder_api.UpdateAccessibilityFeatures(
-      self->engine, static_cast<FlutterAccessibilityFeature>(flags));
-}
diff --git a/shell/platform/linux/fl_engine_private.h b/shell/platform/linux/fl_engine_private.h
index 879e4f54b5ed0..2d13e157d4c27 100644
--- a/shell/platform/linux/fl_engine_private.h
+++ b/shell/platform/linux/fl_engine_private.h
@@ -327,15 +327,6 @@ gboolean fl_engine_register_external_texture(FlEngine* engine,
 gboolean fl_engine_unregister_external_texture(FlEngine* engine,
                                                int64_t texture_id);
 
-/**
- * fl_engine_update_accessibility_features:
- * @engine: an #FlEngine.
- * @flags: the features to enable in the accessibility tree.
- *
- * Tells the Flutter engine to update the flags on the accessibility tree.
- */
-void fl_engine_update_accessibility_features(FlEngine* engine, int32_t flags);
-
 G_END_DECLS
 
 #endif  // FLUTTER_SHELL_PLATFORM_LINUX_FL_ENGINE_PRIVATE_H_
diff --git a/shell/platform/linux/fl_gnome_settings.cc b/shell/platform/linux/fl_gnome_settings.cc
index 31556e53b9e16..c0ece9ed59eb8 100644
--- a/shell/platform/linux/fl_gnome_settings.cc
+++ b/shell/platform/linux/fl_gnome_settings.cc
@@ -63,14 +63,6 @@ static FlColorScheme fl_gnome_settings_get_color_scheme(FlSettings* settings) {
   return color_scheme;
 }
 
-static gboolean fl_gnome_settings_get_enable_animations(FlSettings* settings) {
-  return true;
-}
-
-static gboolean fl_gnome_settings_get_high_contrast(FlSettings* settings) {
-  return false;
-}
-
 static gdouble fl_gnome_settings_get_text_scaling_factor(FlSettings* settings) {
   FlGnomeSettings* self = FL_GNOME_SETTINGS(settings);
 
@@ -141,8 +133,6 @@ static void fl_gnome_settings_class_init(FlGnomeSettingsClass* klass) {
 static void fl_gnome_settings_iface_init(FlSettingsInterface* iface) {
   iface->get_clock_format = fl_gnome_settings_get_clock_format;
   iface->get_color_scheme = fl_gnome_settings_get_color_scheme;
-  iface->get_enable_animations = fl_gnome_settings_get_enable_animations;
-  iface->get_high_contrast = fl_gnome_settings_get_high_contrast;
   iface->get_text_scaling_factor = fl_gnome_settings_get_text_scaling_factor;
 }
 
diff --git a/shell/platform/linux/fl_gnome_settings_test.cc b/shell/platform/linux/fl_gnome_settings_test.cc
index 842594d244e60..f4cd92e0ddafb 100644
--- a/shell/platform/linux/fl_gnome_settings_test.cc
+++ b/shell/platform/linux/fl_gnome_settings_test.cc
@@ -69,16 +69,6 @@ TEST_F(FlGnomeSettingsTest, GtkTheme) {
   EXPECT_EQ(fl_settings_get_color_scheme(settings), FL_COLOR_SCHEME_DARK);
 }
 
-TEST_F(FlGnomeSettingsTest, EnableAnimations) {
-  g_autoptr(FlSettings) settings = fl_gnome_settings_new();
-  EXPECT_TRUE(fl_settings_get_enable_animations(settings));
-}
-
-TEST_F(FlGnomeSettingsTest, HighContrast) {
-  g_autoptr(FlSettings) settings = fl_gnome_settings_new();
-  EXPECT_FALSE(fl_settings_get_high_contrast(settings));
-}
-
 TEST_F(FlGnomeSettingsTest, TextScalingFactor) {
   g_autoptr(GSettings) interface_settings =
       create_settings("ubuntu-20.04", "org.gnome.desktop.interface");
diff --git a/shell/platform/linux/fl_settings.cc b/shell/platform/linux/fl_settings.cc
index 39821b779ecb0..225a5971d5194 100644
--- a/shell/platform/linux/fl_settings.cc
+++ b/shell/platform/linux/fl_settings.cc
@@ -35,14 +35,6 @@ FlColorScheme fl_settings_get_color_scheme(FlSettings* self) {
   return FL_SETTINGS_GET_IFACE(self)->get_color_scheme(self);
 }
 
-gboolean fl_settings_get_enable_animations(FlSettings* self) {
-  return FL_SETTINGS_GET_IFACE(self)->get_enable_animations(self);
-}
-
-gboolean fl_settings_get_high_contrast(FlSettings* self) {
-  return FL_SETTINGS_GET_IFACE(self)->get_high_contrast(self);
-}
-
 gdouble fl_settings_get_text_scaling_factor(FlSettings* self) {
   return FL_SETTINGS_GET_IFACE(self)->get_text_scaling_factor(self);
 }
diff --git a/shell/platform/linux/fl_settings.h b/shell/platform/linux/fl_settings.h
index 4453fd86196ce..25f823614f858 100644
--- a/shell/platform/linux/fl_settings.h
+++ b/shell/platform/linux/fl_settings.h
@@ -43,8 +43,6 @@ struct _FlSettingsInterface {
   GTypeInterface parent;
   FlClockFormat (*get_clock_format)(FlSettings* settings);
   FlColorScheme (*get_color_scheme)(FlSettings* settings);
-  gboolean (*get_enable_animations)(FlSettings* settings);
-  gboolean (*get_high_contrast)(FlSettings* settings);
   gdouble (*get_text_scaling_factor)(FlSettings* settings);
 };
 
@@ -81,31 +79,6 @@ FlClockFormat fl_settings_get_clock_format(FlSettings* settings);
  */
 FlColorScheme fl_settings_get_color_scheme(FlSettings* settings);
 
-/**
- * fl_settings_get_enable_animations:
- * @settings: an #FlSettings.
- *
- * Whether animations should be enabled.
- *
- * This corresponds to `org.gnome.desktop.interface.enable-animations` in GNOME.
- *
- * Returns: %TRUE if animations are enabled.
- */
-gboolean fl_settings_get_enable_animations(FlSettings* settings);
-
-/**
- * fl_settings_get_high_contrast:
- * @settings: an #FlSettings.
- *
- * Whether to use high contrast theme.
- *
- * This corresponds to `org.gnome.desktop.a11y.interface.high-contrast` in
- * GNOME.
- *
- * Returns: %TRUE if high contrast is used.
- */
-gboolean fl_settings_get_high_contrast(FlSettings* settings);
-
 /**
  * fl_settings_get_text_scaling_factor:
  * @settings: an #FlSettings.
diff --git a/shell/platform/linux/fl_settings_plugin.cc b/shell/platform/linux/fl_settings_plugin.cc
index c6d946d2c5838..89c800167860c 100644
--- a/shell/platform/linux/fl_settings_plugin.cc
+++ b/shell/platform/linux/fl_settings_plugin.cc
@@ -6,10 +6,7 @@
 
 #include <gmodule.h>
 
-#include "flutter/shell/platform/embedder/embedder.h"
-#include "flutter/shell/platform/linux/fl_engine_private.h"
 #include "flutter/shell/platform/linux/public/flutter_linux/fl_basic_message_channel.h"
-#include "flutter/shell/platform/linux/public/flutter_linux/fl_binary_messenger.h"
 #include "flutter/shell/platform/linux/public/flutter_linux/fl_json_message_codec.h"
 
 static constexpr char kChannelName[] = "flutter/settings";
@@ -23,7 +20,7 @@ struct _FlSettingsPlugin {
   GObject parent_instance;
 
   FlBasicMessageChannel* channel;
-  FlEngine* engine;
+
   FlSettings* settings;
 };
 
@@ -57,17 +54,6 @@ static void update_settings(FlSettingsPlugin* self) {
       fl_value_new_string(to_platform_brightness(color_scheme)));
   fl_basic_message_channel_send(self->channel, message, nullptr, nullptr,
                                 nullptr);
-
-  if (self->engine != nullptr) {
-    int32_t flags = 0;
-    if (!fl_settings_get_enable_animations(self->settings)) {
-      flags |= kFlutterAccessibilityFeatureDisableAnimations;
-    }
-    if (fl_settings_get_high_contrast(self->settings)) {
-      flags |= kFlutterAccessibilityFeatureHighContrast;
-    }
-    fl_engine_update_accessibility_features(self->engine, flags);
-  }
 }
 
 static void fl_settings_plugin_dispose(GObject* object) {
@@ -76,12 +62,6 @@ static void fl_settings_plugin_dispose(GObject* object) {
   g_clear_object(&self->channel);
   g_clear_object(&self->settings);
 
-  if (self->engine != nullptr) {
-    g_object_remove_weak_pointer(G_OBJECT(self),
-                                 reinterpret_cast<gpointer*>(&(self->engine)));
-    self->engine = nullptr;
-  }
-
   G_OBJECT_CLASS(fl_settings_plugin_parent_class)->dispose(object);
 }
 
@@ -91,17 +71,12 @@ static void fl_settings_plugin_class_init(FlSettingsPluginClass* klass) {
 
 static void fl_settings_plugin_init(FlSettingsPlugin* self) {}
 
-FlSettingsPlugin* fl_settings_plugin_new(FlEngine* engine) {
-  g_return_val_if_fail(FL_IS_ENGINE(engine), nullptr);
+FlSettingsPlugin* fl_settings_plugin_new(FlBinaryMessenger* messenger) {
+  g_return_val_if_fail(FL_IS_BINARY_MESSENGER(messenger), nullptr);
 
   FlSettingsPlugin* self =
       FL_SETTINGS_PLUGIN(g_object_new(fl_settings_plugin_get_type(), nullptr));
 
-  self->engine = engine;
-  g_object_add_weak_pointer(G_OBJECT(self),
-                            reinterpret_cast<gpointer*>(&(self->engine)));
-
-  FlBinaryMessenger* messenger = fl_engine_get_binary_messenger(engine);
   g_autoptr(FlJsonMessageCodec) codec = fl_json_message_codec_new();
   self->channel = fl_basic_message_channel_new(messenger, kChannelName,
                                                FL_MESSAGE_CODEC(codec));
diff --git a/shell/platform/linux/fl_settings_plugin.h b/shell/platform/linux/fl_settings_plugin.h
index 2b6782a06df2d..344a98dd8db91 100644
--- a/shell/platform/linux/fl_settings_plugin.h
+++ b/shell/platform/linux/fl_settings_plugin.h
@@ -6,7 +6,7 @@
 #define FLUTTER_SHELL_PLATFORM_LINUX_FL_SETTINGS_PLUGIN_H_
 
 #include "flutter/shell/platform/linux/fl_settings.h"
-#include "flutter/shell/platform/linux/public/flutter_linux/fl_engine.h"
+#include "flutter/shell/platform/linux/public/flutter_linux/fl_binary_messenger.h"
 
 G_BEGIN_DECLS
 
@@ -25,13 +25,13 @@ G_DECLARE_FINAL_TYPE(FlSettingsPlugin,
 
 /**
  * fl_settings_plugin_new:
- * @messenger: an #FlEngine
+ * @messenger: an #FlBinaryMessenger
  *
  * Creates a new plugin that sends user settings to the Flutter engine.
  *
  * Returns: a new #FlSettingsPlugin
  */
-FlSettingsPlugin* fl_settings_plugin_new(FlEngine* engine);
+FlSettingsPlugin* fl_settings_plugin_new(FlBinaryMessenger* messenger);
 
 /**
  * fl_settings_plugin_start:
diff --git a/shell/platform/linux/fl_settings_plugin_test.cc b/shell/platform/linux/fl_settings_plugin_test.cc
index abd7216c7590d..55f9e98c8acea 100644
--- a/shell/platform/linux/fl_settings_plugin_test.cc
+++ b/shell/platform/linux/fl_settings_plugin_test.cc
@@ -3,9 +3,6 @@
 // found in the LICENSE file.
 
 #include "flutter/shell/platform/linux/fl_settings_plugin.h"
-#include "flutter/shell/platform/embedder/embedder.h"
-#include "flutter/shell/platform/embedder/test_utils/proc_table_replacement.h"
-#include "flutter/shell/platform/linux/fl_engine_private.h"
 #include "flutter/shell/platform/linux/public/flutter_linux/fl_binary_messenger.h"
 #include "flutter/shell/platform/linux/public/flutter_linux/fl_json_message_codec.h"
 #include "flutter/shell/platform/linux/public/flutter_linux/fl_value.h"
@@ -41,9 +38,7 @@ TEST(FlSettingsPluginTest, AlwaysUse24HourFormat) {
   ::testing::NiceMock<flutter::testing::MockSettings> settings;
   ::testing::NiceMock<flutter::testing::MockBinaryMessenger> messenger;
 
-  g_autoptr(FlEngine) engine = FL_ENGINE(g_object_new(
-      fl_engine_get_type(), "binary-messenger", messenger, nullptr));
-  g_autoptr(FlSettingsPlugin) plugin = fl_settings_plugin_new(engine);
+  g_autoptr(FlSettingsPlugin) plugin = fl_settings_plugin_new(messenger);
 
   g_autoptr(FlValue) use_12h = fl_value_new_bool(false);
   g_autoptr(FlValue) use_24h = fl_value_new_bool(true);
@@ -66,9 +61,7 @@ TEST(FlSettingsPluginTest, PlatformBrightness) {
   ::testing::NiceMock<flutter::testing::MockSettings> settings;
   ::testing::NiceMock<flutter::testing::MockBinaryMessenger> messenger;
 
-  g_autoptr(FlEngine) engine = FL_ENGINE(g_object_new(
-      fl_engine_get_type(), "binary-messenger", messenger, nullptr));
-  g_autoptr(FlSettingsPlugin) plugin = fl_settings_plugin_new(engine);
+  g_autoptr(FlSettingsPlugin) plugin = fl_settings_plugin_new(messenger);
 
   g_autoptr(FlValue) light = fl_value_new_string("light");
   g_autoptr(FlValue) dark = fl_value_new_string("dark");
@@ -91,9 +84,7 @@ TEST(FlSettingsPluginTest, TextScaleFactor) {
   ::testing::NiceMock<flutter::testing::MockSettings> settings;
   ::testing::NiceMock<flutter::testing::MockBinaryMessenger> messenger;
 
-  g_autoptr(FlEngine) engine = FL_ENGINE(g_object_new(
-      fl_engine_get_type(), "binary-messenger", messenger, nullptr));
-  g_autoptr(FlSettingsPlugin) plugin = fl_settings_plugin_new(engine);
+  g_autoptr(FlSettingsPlugin) plugin = fl_settings_plugin_new(messenger);
 
   g_autoptr(FlValue) one = fl_value_new_float(1.0);
   g_autoptr(FlValue) two = fl_value_new_float(2.0);
@@ -111,57 +102,3 @@ TEST(FlSettingsPluginTest, TextScaleFactor) {
 
   fl_settings_emit_changed(settings);
 }
-
-// MOCK_ENGINE_PROC is leaky by design
-// NOLINTBEGIN(clang-analyzer-core.StackAddressEscape)
-TEST(FlSettingsPluginTest, AccessibilityFeatures) {
-  g_autoptr(FlEngine) engine = make_mock_engine();
-  FlutterEngineProcTable* embedder_api = fl_engine_get_embedder_api(engine);
-
-  std::vector<FlutterAccessibilityFeature> calls;
-  embedder_api->UpdateAccessibilityFeatures = MOCK_ENGINE_PROC(
-      UpdateAccessibilityFeatures,
-      ([&calls](auto engine, FlutterAccessibilityFeature features) {
-        calls.push_back(features);
-        return kSuccess;
-      }));
-
-  g_autoptr(FlSettingsPlugin) plugin = fl_settings_plugin_new(engine);
-
-  ::testing::NiceMock<flutter::testing::MockSettings> settings;
-
-  EXPECT_CALL(settings, fl_settings_get_enable_animations(
-                            ::testing::Eq<FlSettings*>(settings)))
-      .WillOnce(::testing::Return(false))
-      .WillOnce(::testing::Return(true))
-      .WillOnce(::testing::Return(false))
-      .WillOnce(::testing::Return(true));
-
-  EXPECT_CALL(settings, fl_settings_get_high_contrast(
-                            ::testing::Eq<FlSettings*>(settings)))
-      .WillOnce(::testing::Return(true))
-      .WillOnce(::testing::Return(false))
-      .WillOnce(::testing::Return(false))
-      .WillOnce(::testing::Return(true));
-
-  fl_settings_plugin_start(plugin, settings);
-  EXPECT_THAT(calls, ::testing::SizeIs(1));
-  EXPECT_EQ(calls.back(), static_cast<FlutterAccessibilityFeature>(
-                              kFlutterAccessibilityFeatureDisableAnimations |
-                              kFlutterAccessibilityFeatureHighContrast));
-
-  fl_settings_emit_changed(settings);
-  EXPECT_THAT(calls, ::testing::SizeIs(2));
-  EXPECT_EQ(calls.back(), static_cast<FlutterAccessibilityFeature>(0));
-
-  fl_settings_emit_changed(settings);
-  EXPECT_THAT(calls, ::testing::SizeIs(3));
-  EXPECT_EQ(calls.back(), static_cast<FlutterAccessibilityFeature>(
-                              kFlutterAccessibilityFeatureDisableAnimations));
-
-  fl_settings_emit_changed(settings);
-  EXPECT_THAT(calls, ::testing::SizeIs(4));
-  EXPECT_EQ(calls.back(), static_cast<FlutterAccessibilityFeature>(
-                              kFlutterAccessibilityFeatureHighContrast));
-}
-// NOLINTEND(clang-analyzer-core.StackAddressEscape)
diff --git a/shell/platform/linux/fl_settings_portal.cc b/shell/platform/linux/fl_settings_portal.cc
index 1cb93240dc942..cf842b0250166 100644
--- a/shell/platform/linux/fl_settings_portal.cc
+++ b/shell/platform/linux/fl_settings_portal.cc
@@ -24,25 +24,12 @@ static const FlSetting kColorScheme = {
     G_VARIANT_TYPE_UINT32,
 };
 
-static constexpr char kGnomeA11yInterface[] =
-    "org.gnome.desktop.a11y.interface";
-static const FlSetting kHighContrast = {
-    kGnomeA11yInterface,
-    "high-contrast",
-    G_VARIANT_TYPE_BOOLEAN,
-};
-
 static constexpr char kGnomeDesktopInterface[] = "org.gnome.desktop.interface";
 static const FlSetting kClockFormat = {
     kGnomeDesktopInterface,
     "clock-format",
     G_VARIANT_TYPE_STRING,
 };
-static const FlSetting kEnableAnimations = {
-    kGnomeDesktopInterface,
-    "enable-animations",
-    G_VARIANT_TYPE_BOOLEAN,
-};
 static const FlSetting kGtkTheme = {
     kGnomeDesktopInterface,
     "gtk-theme",
@@ -55,8 +42,10 @@ static const FlSetting kTextScalingFactor = {
 };
 
 static const FlSetting kAllSettings[] = {
-    kClockFormat, kColorScheme,  kEnableAnimations,
-    kGtkTheme,    kHighContrast, kTextScalingFactor,
+    kClockFormat,
+    kColorScheme,
+    kGtkTheme,
+    kTextScalingFactor,
 };
 
 static constexpr char kClockFormat12Hour[] = "12h";
@@ -196,32 +185,6 @@ static FlColorScheme fl_settings_portal_get_color_scheme(FlSettings* settings) {
   return color_scheme;
 }
 
-static gboolean fl_settings_portal_get_enable_animations(FlSettings* settings) {
-  FlSettingsPortal* self = FL_SETTINGS_PORTAL(settings);
-
-  gboolean enable_animations = true;
-
-  g_autoptr(GVariant) value = nullptr;
-  if (get_value(self, &kEnableAnimations, &value)) {
-    enable_animations = g_variant_get_boolean(value);
-  }
-
-  return enable_animations;
-}
-
-static gboolean fl_settings_portal_get_high_contrast(FlSettings* settings) {
-  FlSettingsPortal* self = FL_SETTINGS_PORTAL(settings);
-
-  gboolean high_contrast = false;
-
-  g_autoptr(GVariant) value = nullptr;
-  if (get_value(self, &kHighContrast, &value)) {
-    high_contrast = g_variant_get_boolean(value);
-  }
-
-  return high_contrast;
-}
-
 static gdouble fl_settings_portal_get_text_scaling_factor(
     FlSettings* settings) {
   FlSettingsPortal* self = FL_SETTINGS_PORTAL(settings);
@@ -253,8 +216,6 @@ static void fl_settings_portal_class_init(FlSettingsPortalClass* klass) {
 static void fl_settings_portal_iface_init(FlSettingsInterface* iface) {
   iface->get_clock_format = fl_settings_portal_get_clock_format;
   iface->get_color_scheme = fl_settings_portal_get_color_scheme;
-  iface->get_enable_animations = fl_settings_portal_get_enable_animations;
-  iface->get_high_contrast = fl_settings_portal_get_high_contrast;
   iface->get_text_scaling_factor = fl_settings_portal_get_text_scaling_factor;
 }
 
diff --git a/shell/platform/linux/fl_settings_portal_test.cc b/shell/platform/linux/fl_settings_portal_test.cc
index 60010bdeeea2a..4130a8cb1a84d 100644
--- a/shell/platform/linux/fl_settings_portal_test.cc
+++ b/shell/platform/linux/fl_settings_portal_test.cc
@@ -97,32 +97,6 @@ TEST(FlSettingsPortalTest, GtkTheme) {
   EXPECT_EQ(fl_settings_get_color_scheme(portal), FL_COLOR_SCHEME_LIGHT);
 }
 
-TEST(FlSettingsPortalTest, EnableAnimations) {
-  g_autoptr(GVariantDict) settings = g_variant_dict_new(nullptr);
-
-  g_autoptr(FlSettings) portal =
-      FL_SETTINGS(fl_settings_portal_new_with_values(settings));
-  EXPECT_TRUE(fl_settings_get_enable_animations(portal));
-
-  g_variant_dict_insert_value(settings,
-                              "org.gnome.desktop.interface::enable-animations",
-                              g_variant_new_boolean(false));
-  EXPECT_FALSE(fl_settings_get_enable_animations(portal));
-}
-
-TEST(FlSettingsPortalTest, HighContrast) {
-  g_autoptr(GVariantDict) settings = g_variant_dict_new(nullptr);
-
-  g_autoptr(FlSettings) portal =
-      FL_SETTINGS(fl_settings_portal_new_with_values(settings));
-  EXPECT_FALSE(fl_settings_get_high_contrast(portal));
-
-  g_variant_dict_insert_value(settings,
-                              "org.gnome.desktop.a11y.interface::high-contrast",
-                              g_variant_new_boolean(true));
-  EXPECT_TRUE(fl_settings_get_high_contrast(portal));
-}
-
 TEST(FlSettingsPortalTest, TextScalingFactor) {
   g_autoptr(GVariantDict) settings = g_variant_dict_new(nullptr);
 
diff --git a/shell/platform/linux/testing/mock_engine.cc b/shell/platform/linux/testing/mock_engine.cc
index 69057667e8c39..0c53f8c15ffd6 100644
--- a/shell/platform/linux/testing/mock_engine.cc
+++ b/shell/platform/linux/testing/mock_engine.cc
@@ -467,12 +467,6 @@ FlutterEngineResult FlutterEngineUpdateSemanticsEnabled(
   return kSuccess;
 }
 
-FlutterEngineResult FlutterEngineUpdateAccessibilityFeatures(
-    FLUTTER_API_SYMBOL(FlutterEngine) engine,
-    FlutterAccessibilityFeature features) {
-  return kSuccess;
-}
-
 FlutterEngineResult FlutterEngineDispatchSemanticsAction(
     FLUTTER_API_SYMBOL(FlutterEngine) engine,
     uint64_t id,
@@ -546,7 +540,5 @@ FlutterEngineResult FlutterEngineGetProcAddresses(
   table->MarkExternalTextureFrameAvailable =
       &FlutterEngineMarkExternalTextureFrameAvailable;
   table->UnregisterExternalTexture = &FlutterEngineUnregisterExternalTexture;
-  table->UpdateAccessibilityFeatures =
-      &FlutterEngineUpdateAccessibilityFeatures;
   return kSuccess;
 }
diff --git a/shell/platform/linux/testing/mock_settings.cc b/shell/platform/linux/testing/mock_settings.cc
index ebe6fa2b49b55..944b13f2eb880 100644
--- a/shell/platform/linux/testing/mock_settings.cc
+++ b/shell/platform/linux/testing/mock_settings.cc
@@ -40,16 +40,6 @@ static FlColorScheme fl_mock_settings_get_color_scheme(FlSettings* settings) {
   return self->mock->fl_settings_get_color_scheme(settings);
 }
 
-static gboolean fl_mock_settings_get_enable_animations(FlSettings* settings) {
-  FlMockSettings* self = FL_MOCK_SETTINGS(settings);
-  return self->mock->fl_settings_get_enable_animations(settings);
-}
-
-static gboolean fl_mock_settings_get_high_contrast(FlSettings* settings) {
-  FlMockSettings* self = FL_MOCK_SETTINGS(settings);
-  return self->mock->fl_settings_get_high_contrast(settings);
-}
-
 static gdouble fl_mock_settings_get_text_scaling_factor(FlSettings* settings) {
   FlMockSettings* self = FL_MOCK_SETTINGS(settings);
   return self->mock->fl_settings_get_text_scaling_factor(settings);
@@ -58,8 +48,6 @@ static gdouble fl_mock_settings_get_text_scaling_factor(FlSettings* settings) {
 static void fl_mock_settings_iface_init(FlSettingsInterface* iface) {
   iface->get_clock_format = fl_mock_settings_get_clock_format;
   iface->get_color_scheme = fl_mock_settings_get_color_scheme;
-  iface->get_enable_animations = fl_mock_settings_get_enable_animations;
-  iface->get_high_contrast = fl_mock_settings_get_high_contrast;
   iface->get_text_scaling_factor = fl_mock_settings_get_text_scaling_factor;
 }
 
diff --git a/shell/platform/linux/testing/mock_settings.h b/shell/platform/linux/testing/mock_settings.h
index 57636b3ad11ff..79f77faab28d0 100644
--- a/shell/platform/linux/testing/mock_settings.h
+++ b/shell/platform/linux/testing/mock_settings.h
@@ -26,10 +26,6 @@ class MockSettings {
   MOCK_METHOD1(fl_settings_get_color_scheme,
                FlColorScheme(FlSettings* settings));
 
-  MOCK_METHOD1(fl_settings_get_enable_animations, bool(FlSettings* settings));
-
-  MOCK_METHOD1(fl_settings_get_high_contrast, bool(FlSettings* settings));
-
   MOCK_METHOD1(fl_settings_get_text_scaling_factor,
                gdouble(FlSettings* settings));