Updated openstack/openstack
Project: openstack/neutron  66b5939440ff8dd78cae2b478c54681b5204ee3c

Remove Python 2.6 classifier

Neutron does not support Python 2.6 anymore starting with Kilo and might
not work correctly with it, so remove the classifier.

Change-Id: Ib7cddecdbec2c5152fe526bada6587129cf63ffd