remove IntervalArray.__ne__

Author: jorisvandenbossche

pandas/core/arrays/interval.py

@@ -606,9 +606,6 @@ def __eq__(self, other):
 
         return result
 
-    def __ne__(self, other):
-        return ~self.__eq__(other)
-
     def fillna(self, value=None, method=None, limit=None):
         """
         Fill NA/NaN values using the specified method.

pandas/tests/extension/base/ops.py

@@ -174,6 +174,12 @@ def test_direct_arith_with_series_returns_not_implemented(self, data):
         else:
             raise pytest.skip(f"{type(data).__name__} does not implement __eq__")
 
+        if hasattr(data, "__ne__"):
+            result = data.__ne__(other)
+            assert result is NotImplemented
+        else:
+            raise pytest.skip(f"{type(data).__name__} does not implement __ne__")
+
 
 class BaseUnaryOpsTests(BaseOpsUtil):
     def test_invert(self, data):