Fix removed reference.

Author: serhiy-storchaka

Doc/whatsnew/3.2.rst

@@ -1815,8 +1815,7 @@ names.
    ===============================   ==============================
 
   Likewise, the ``TestCase.fail*`` methods deprecated in Python 3.1 are expected
-  to be removed in Python 3.3.  Also see the :ref:`deprecated-aliases` section in
-  the :mod:`unittest` documentation.
+  to be removed in Python 3.3.
 
   (Contributed by Ezio Melotti; :issue:`9424`.)