REF: use _unary_method for SparseArray.__abs__ (#43846)

Author: jbrockmendel

pandas/core/arrays/sparse/array.py

@@ -1597,9 +1597,6 @@ def __array_ufunc__(self, ufunc: np.ufunc, method: str, *inputs, **kwargs):
         else:
             return type(self)(result)
 
-    def __abs__(self):
-        return np.abs(self)
-
     # ------------------------------------------------------------------------
     # Ops
     # ------------------------------------------------------------------------
@@ -1681,6 +1678,9 @@ def __neg__(self) -> SparseArray:
     def __invert__(self) -> SparseArray:
         return self._unary_method(operator.invert)
 
+    def __abs__(self) -> SparseArray:
+        return self._unary_method(operator.abs)
+
     # ----------
     # Formatting
     # -----------