Cleaned code.

src/sage/rings/lazy_laurent_series_operator.py

@@ -1022,17 +1022,4 @@ def __call__(self, s, n):
             sage: f
             2*z + 2*z^2
         """
-        return (n + 1) * self._series.coefficient(n + 1)
-
-    # def __hash__(self):
-    #     """
-    #     Return the hash of ``self``.
-
-    #     TESTS::
-
-    #         sage: L.<z> = LazyLaurentSeriesRing(ZZ)
-    #         sage: f = 2*(z + z^2)
-    #         sage: {f: 1}
-    #         {2*z + 2*z^2: 1}
-    #     """
-    #     return hash((type(self), self._series, self._scalar))
+        return (n + 1) * self._series.coefficient(n + 1)