Revert ops/__init__ to upstream master

Author: Marco Gorelli

pandas/core/ops/__init__.py

@@ -829,11 +829,6 @@ def wrapper(self, other):
             # Defer to DataFrame implementation; fail early
             return NotImplemented
 
-        elif should_extension_dispatch(self, other):
-            # e.g. SparseArray
-            res_values = dispatch_to_extension_op(op, self, other)
-            return _construct_result(self, res_values, index=self.index, name=res_name)
-
         elif isinstance(other, (ABCSeries, ABCIndexClass)):
             is_other_int_dtype = is_integer_dtype(other.dtype)
             other = other if is_other_int_dtype else fill_bool(other)