Remove unused stuff from tox.ini

Author: vtitor

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py26,py27,docs
+envlist = py26,py27
 
 
 [testenv]
@@ -15,15 +15,3 @@ deps=pytest<3.3
      twisted<15.5
 commands=py.test []
 sitepackages=False
-
-[testenv:py25]
-deps=pytest
-     greenlet
-     twisted<11
-     zope.interface<4
-commands=py.test []
-sitepackages=False
-
-[testenv:docs]
-deps=docutils
-commands=rst2html.py --halt=2 README.rst README.html