drop python3.3 support in classifier
drop python3.3 support in classifier

We don't run python 3.3 CI jobs anymore,
so just drop it from classifier.

Change-Id: I871269ae54067aae40f5dc06affbd4354104ee91

dtroyer/python-openstacksdk,dtroyer/python-openstacksdk,openstack/python-openstacksdk,stackforge/python-openstacksdk,stackforge/python-openstacksdk,dtroyer/os-client-config,openstack/python-openstacksdk,openstack/os-client-config