INSTALL.md & requirements.txt: remove Twisted.

INSTALL.md

@@ -16,14 +16,10 @@ extra features you may want. (Order by decreasing estimated usefulness)
 
 [python-gnupg] -- enables user authentication with GPG
 
-[Twisted] -- Version 1.2.0 or greater (unless you actually want to use Twisted,
-you don't actually need it)
-
 [charade]:https://pypi.python.org/pypi/charade
 [pytz]:https://pypi.python.org/pypi/pytz
 [python-dateutil]:https://pypi.python.org/pypi/python-dateutil
 [python-gnupg]:https://pypi.python.org/pypi/python-gnupg
-[Twisted]:http://twistedmatrix.com/trac/
 
 For more information and help on how to use Supybot, checkout
 the documents under [docs/], especially [GETTING_STARTED] and

requirements.txt

@@ -2,6 +2,5 @@ charade
 pytz
 python-dateutil
 python-gnupg
-Twisted
 feedparser
 sqlalchemy