Updated openstack/openstack
Project: openstack/nova  cf157c8f3511036b44468fb6cc40b7be04e9f71d
null
Remove a bogus and unnecessary docstring

A docstring in the Cinder API check_attached method was wrong, and is
quite unnecessary as well since the method is pretty much self
explanatory.

Change-Id: I179611bc627d49a4ffaa58f27dd1b7dcb33c6870