Removed unreachable code
Removed unreachable code

In cinder/volume/drivers/drbdmanagedrv.py
there was an unreachable return statement.

I removed the unreachable code.

Change-Id: Ida6054c9dac369aa050b0aa9f967253c79d97a53

openstack/cinder,Datera/cinder,NetApp/cinder,cloudbase/cinder,Datera/cinder,openstack/cinder,ge0rgi/cinder,j-griffith/cinder,NetApp/cinder,mahak/cinder,Hybrid-Cloud/cinder,cloudbase/cinder,j-griffith/cinder,phenoxim/cinder,eharney/cinder,Nexenta/cinder,Nexenta/cinder,mahak/cinder,eharney/cinder,bswartz/cinder,phenoxim/cinder,bswartz/cinder,Hybrid-Cloud/cinder