Drop py26 from setup.cfg
Drop py26 from setup.cfg

As of https://wiki.openstack.org/wiki/python3 OpenStack
is dropping py26 for mitaka. In this patch I deleted py26
from setup.cfg

Change-Id: I1ae1507cdad0e940167c9c27363ed585a426a7d8

vauxoo-tests/vauxoodocstheme,vauxoo-tests/vauxoodocstheme,openstack/openstackdocstheme,vauxoo-tests/vauxoodocstheme,openstack/openstackdocstheme,openstack/openstackdocstheme,openstack/openstackdocstheme