Updated openstack/openstack
Project: openstack/sahara  203124161343712e0d35b339653db58d4df6d876

Remove py26 from tox

Sahara does not support Python 2.6 anymore starting Kilo, it's not even
mentionned in the classifiers. Remove the tox target too as it's now
useless.

Change-Id: I4a94bc696f27017ffdfc96ce2f2638d92117beac