CLN: remove fastparquet compat shim

pandas/core/internals/blocks.py

@@ -254,19 +254,11 @@ def make_block(self, values, placement=None):
 
         return make_block(values, placement=placement, ndim=self.ndim)
 
-    def make_block_same_class(self, values, placement=None, ndim=None, dtype=None):
+    def make_block_same_class(self, values, placement=None, ndim=None):
         """ Wrap given values in a block of same type as self. """
-        if dtype is not None:
-            # issue 19431 fastparquet is passing this
-            warnings.warn(
-                "dtype argument is deprecated, will be removed " "in a future release.",
-                FutureWarning,
-            )
         if placement is None:
             placement = self.mgr_locs
-        return make_block(
-            values, placement=placement, ndim=ndim, klass=self.__class__, dtype=dtype
-        )
+        return make_block(values, placement=placement, ndim=ndim, klass=self.__class__)
 
     def __repr__(self):
         # don't want to print out all of the items here
@@ -3275,7 +3267,7 @@ def get_block_type(values, dtype=None):
     return cls
 
 
-def make_block(values, placement, klass=None, ndim=None, dtype=None, fastpath=None):
+def make_block(values, placement, klass=None, ndim=None, dtype=None):
     # Ensure that we don't allow PandasArray / PandasDtype in internals.
     # For now, blocks should be backed by ndarrays when possible.
     if isinstance(values, ABCPandasArray):
@@ -3286,12 +3278,6 @@ def make_block(values, placement, klass=None, ndim=None, dtype=None, fastpath=No
     if isinstance(dtype, PandasDtype):
         dtype = dtype.numpy_dtype
 
-    if fastpath is not None:
-        # GH#19265 pyarrow is passing this
-        warnings.warn(
-            "fastpath argument is deprecated, will be removed " "in a future release.",
-            FutureWarning,
-        )
     if klass is None:
         dtype = dtype or values.dtype
         klass = get_block_type(values, dtype)

pandas/tests/internals/test_internals.py

@@ -317,12 +317,6 @@ def test_delete(self):
         with pytest.raises(Exception):
             newb.delete(3)
 
-    def test_make_block_same_class(self):
-        # issue 19431
-        block = create_block("M8[ns, US/Eastern]", [3])
-        with tm.assert_produces_warning(FutureWarning, check_stacklevel=False):
-            block.make_block_same_class(block.values, dtype=block.values.dtype)
-
 
 class TestDatetimeBlock:
     def test_try_coerce_arg(self):
@@ -1311,13 +1305,6 @@ def test_holder(typestr, holder):
     assert blk._holder is holder
 
 
-def test_deprecated_fastpath():
-    # GH#19265
-    values = np.random.rand(3, 3)
-    with tm.assert_produces_warning(FutureWarning, check_stacklevel=False):
-        make_block(values, placement=np.arange(3), fastpath=True)
-
-
 def test_validate_ndim():
     values = np.array([1.0, 2.0])
     placement = slice(2)