Remove unused oslo.service requirement
Remove unused oslo.service requirement

All dependence on this was removed from glance over a year ago in the
commit with hash feb927c8a11813c2cd4fbb73b2561a73e281f1aa.

Change-Id: Id5ec93a71e0d35f82620e7f2f8fabb0ce6eb07e0

rajalokan/glance,stevelle/glance,openstack/glance,rajalokan/glance,openstack/glance,stevelle/glance,openstack/glance