Trival: Remove 'MANIFEST.in'
Trival: Remove 'MANIFEST.in'

Everything in this file is automatically generated by pbr. There
appears to be no good reason to keep it around.

Change-Id: I10fc8ff7b393057ff02363bbb89fddaa3884f3bc

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