Remove reference to zero argument form of super() in 2.x docs.
diff --git a/Doc/library/functions.rst b/Doc/library/functions.rst
index 20b8644..e0bc8d7 100644
--- a/Doc/library/functions.rst
+++ b/Doc/library/functions.rst
@@ -1240,8 +1240,7 @@
 
    Also note that :func:`super` is not limited to use inside methods.  The two
    argument form specifies the arguments exactly and makes the appropriate
-   references.  The zero argument form automatically searches the stack frame
-   for the class (``__class__``) and the first argument.
+   references.
 
    .. versionadded:: 2.2