Since the commit If98db25f1f4032725444c3959acb9aad8f869802 XML
support has been removed from Cinder API. And the version API
doesn't return XML entity on media-types.
Then this patch removes the entity from sample files.
Change-Id: I782d5cf7a152647254d9a36edcc7352000139dc3
c8bfb4b8eb