Comment 3 for bug 956366

Reviewed: https://review.openstack.org/5424
Committed: http://github.com/openstack/nova/commit/dd6c1907c6634ccb41c3d94ed3296498e32333b0
Submitter: Jenkins
Branch: master

commit dd6c1907c6634ccb41c3d94ed3296498e32333b0
Author: Adam Gandelman <email address hidden>
Date: Thu Mar 15 15:38:11 2012 -0700

    db api: Remove check for security groups reference

    security_group_in_use() should only be checking that a security
    group is associated with running instances, not that other groups
    are referencing it in their rules. With this check in place, it
    becomes impossible to delete self-referential security groups.

    Fixes bug 956366.

    Update: Remove obsolete test as well

    Change-Id: I31f49c655b044dbaf0fb66dfaadb876c9dc3d167