Merge pyflakes-pair-6993

Author: adiroiban
Reviewer: exarkun
Fixes: #6993

Remove unused imports from modules in Twisted Pair.  Twisted Pair is now
"pyflakes clean".


git-svn-id: svn://svn.twistedmatrix.com/svn/Twisted/trunk@41765 bbbe8e31-12d6-0310-92fd-ac37d47ddeeb
Merge pyflakes-news-6991

Author: adiroiban
Reviewer: hawkowl
Fixes: #6991

Removes some unneeded imports, making Twisted News "pyflakes clean".

git-svn-id: svn://svn.twistedmatrix.com/svn/Twisted/trunk@41767 bbbe8e31-12d6-0310-92fd-ac37d47ddeeb