Remove unused DB API get_rcs_by_bay_uuid

[Vilobh Meshram]

get_rcs_by_bay_uuid is not used by any consumer.

Proposed that we should clean up the dead code. Discussed this with Kennan and hongbin on IRC and hence proposing the fix to clean up dead code. If all the cores agree we can merge this.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/217865

[Vilobh Meshram (vilobhmm)]

After further analysis found that get_rcs_by_bay_uuid is not used by any consumer.

Proposed that we should clean up the dead code. Discussed this with Kennan and hongbin on IRC and hence proposing the fix to clean up dead code. If all the cores agree we can merge this.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/217865
Committed: https://git.openstack.org/cgit/openstack/magnum/commit/?id=31dcba92cb6c1a1f0a062b65f96f1bbb650d93ef
Submitter: Jenkins
Branch: master

commit 31dcba92cb6c1a1f0a062b65f96f1bbb650d93ef
Author: Vilobh Meshram <email address hidden>
Date: Thu Aug 27 12:39:27 2015 -0700

    Remove unused DB API get_rcs_by_bay_uuid

    Remove unused DB API 'get_rcs_by_bay_uuid' and associated unit
    tests. There are no consumers of this API in its current state of
    art. Cleaning up dead code.

    Also, added a related bug which will serve as a placeholder
    to re-add the removed code, if needed in future.

    Closes-Bug: #1489570
    Related-Bug: #1499121

    Change-Id: I7c91323e53d7f60a93876197ac1886f8e086d173