CLN: remove pandas.core.categorical (pandas-dev#25655)

Author: simonjayhawkins

pandas/core/categorical.py

@@ -1,6 +1,4 @@
 # -*- coding: utf-8 -*-
-import sys
-
 import pandas as pd
 from pandas import api
 from pandas.util import testing as tm
@@ -148,18 +146,3 @@ def test_deprecation_cdaterange(self):
         with tm.assert_produces_warning(FutureWarning,
                                         check_stacklevel=False):
             cdate_range('2017-01-01', '2017-12-31')
-
-
-class TestCategoricalMove(object):
-
-    def test_categorical_move(self):
-        # May have been cached by another import, e.g. pickle tests.
-        sys.modules.pop("pandas.core.categorical", None)
-
-        with tm.assert_produces_warning(FutureWarning):
-            from pandas.core.categorical import Categorical  # noqa
-
-        sys.modules.pop("pandas.core.categorical", None)
-
-        with tm.assert_produces_warning(FutureWarning):
-            from pandas.core.categorical import CategoricalDtype  # noqa