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.
More details please see:
https://github.com/openstack-dev/pbr/blob/master/pbr/packaging.py#L384

Change-Id: I3ddc352ce430d26bd0e96d0917007762ea80661c

openstack/oslo.vmware