Remove unusued BaseV1ImageRbacTest class

This PS removes unused BaseV1ImageRbacTest class as Patrole
removed suppor for Glance v1 some time ago with PS:
I5b2e47542b8e6a7a9c0ce7f5c9d4c76291fac8c1

Change-Id: I945043830a2e9fe653c8578b61183176a0ed7fd9
1 file changed