Remove redundant 'exc = True' line (GH-4357)

berkerpeksag · web-flow · commit 7c9da3e5ba06 · 2017-11-11T17:55:05.000+03:00
It can be removed after python/peps@c28890f
diff --git a/Doc/reference/compound_stmts.rst b/Doc/reference/compound_stmts.rst
@@ -773,7 +773,6 @@ Is semantically equivalent to::
     mgr = (EXPR)
     aexit = type(mgr).__aexit__
     aenter = type(mgr).__aenter__(mgr)
-    exc = True
 
     VAR = await aenter
     try:
