PEP 484: Remove statement about unicode, in the python2.7 section.

See python/typing#418 (comment).
Let's leave it up to type-checkers whether they want `unicode`, in Python 2
code, to mean "only unicode" or "str or unicode".

Author: matthiaskramm

pep-0484.txt

@@ -2149,8 +2149,8 @@ Notes:
         # # type: () -> None # This is OK
 
 When checking Python 2.7 code, type checkers should treat the ``int`` and
-``long`` types as equivalent. For parameters typed as ``unicode`` or
-``Text``, arguments of type ``str`` should be acceptable.
+``long`` types as equivalent. For parameters typed as ``Text``, arguments of
+both ``str`` and ``unicode`` should be acceptable.
 
 Rejected Alternatives
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