Temporarily - do not run py33 tests on travis

Signed-off-by: Joffrey F <[email protected]>

Author: shin-

.travis.yml

@@ -4,7 +4,8 @@ python:
   - "3.5"
 env:
     - TOX_ENV=py27
-    - TOX_ENV=py33
+# FIXME: default travis worker does not carry py33 anymore. Can this be configured?
+#    - TOX_ENV=py33
     - TOX_ENV=py34
     - TOX_ENV=py35
     - TOX_ENV=flake8