Remove an unsupported environment, Django 1.9 drops Python 3.3 support

Author: dulacp

tox.ini

@@ -97,12 +97,6 @@ deps =
     Django<1.9
     {[testenv]deps}
 
-[testenv:py33-django19]
-basepython = python3.3
-deps =
-    git+https://github.com/django/django.git@stable/1.9.x#egg=Django
-    {[testenv]deps}
-
 [testenv:py34-django15]
 basepython = python3.4
 deps =