Remove excess runtime classes that didn't end up getting used

Author: bdero

impeller/compiler/BUILD.gn

@@ -67,10 +67,10 @@ impeller_component("compiler_lib") {
     "../base",
     "../geometry",
     "../runtime_stage",
-    "../shader_bundle",
     "//flutter/fml",
 
     # All third_party deps must be included by the global license script.
+    "//flutter/impeller/shader_bundle:shader_bundle_flatbuffers",
     "//third_party/inja",
     "//third_party/shaderc_flutter",
     "//third_party/spirv_cross_flutter",

impeller/shader_bundle/BUILD.gn

@@ -14,19 +14,3 @@ flatbuffers("shader_bundle_flatbuffers") {
     "//flutter/third_party/flatbuffers",
   ]
 }
-
-impeller_component("shader_bundle") {
-  sources = [
-    "shader.cc",
-    "shader.h",
-    "shader_bundle.cc",
-    "shader_bundle.h",
-  ]
-  public_deps = [
-    ":shader_bundle_flatbuffers",
-    "../base",
-    "../core",
-    "//flutter/fml",
-    "//flutter/impeller/runtime_stage:runtime_stage",
-  ]
-}