don't register arrays

Author: jreback

pandas/core/arrays/mask/_numpy.py

@@ -4,11 +4,10 @@
 
 import numpy as np
 
-from pandas.api.extensions import register_extension_dtype, take
+from pandas.api.extensions import take
 from pandas.core.arrays.mask._base import BoolArray, BoolDtype
 
 
-@register_extension_dtype
 class NumpyBoolDtype(BoolDtype):
 
     na_value = np.nan

pandas/core/arrays/mask/_pyarrow.py

@@ -10,7 +10,7 @@
 
 import numpy as np
 
-from pandas.api.extensions import register_extension_dtype, take
+from pandas.api.extensions import take
 from pandas.api.types import is_scalar
 from pandas.core.arrays.mask._base import BoolArray, BoolDtype
 
@@ -24,7 +24,6 @@
     raise
 
 
-@register_extension_dtype
 class ArrowBoolDtype(BoolDtype):
 
     na_value = pa.NULL

pandas/tests/arrays/mask/test_pyarrow_bool.py

@@ -10,7 +10,6 @@
 pytest.importorskip('pyarrow', minversion="0.10.0")
 
 
-
 @pytest.fixture
 def dtype():
     return ArrowBoolDtype()