CLN: remove redundant override

Author: jbrockmendel

pandas/core/arrays/string_arrow.py

@@ -472,7 +472,6 @@ def _cmp_method(self, other, op):
 class ArrowStringArrayNumpySemantics(ArrowStringArray):
     _na_value = np.nan
     _str_get = ArrowStringArrayMixin._str_get
-    _str_removesuffix = ArrowStringArrayMixin._str_removesuffix
     _str_capitalize = ArrowStringArrayMixin._str_capitalize
     _str_title = ArrowStringArrayMixin._str_title
     _str_swapcase = ArrowStringArrayMixin._str_swapcase