trivial: Remove dead nova.db functions
trivial: Remove dead nova.db functions

Change-Id: I9eed6a0cb9fcaa969cfa053f6f9045b063f5e277
Signed-off-by: Stephen Finucane <492121341a95b3c3aab646bed44634f739dd019b@redhat.com>

klmitch/nova,openstack/nova,klmitch/nova,rahulunair/nova,mahak/nova,klmitch/nova,rahulunair/nova,openstack/nova,klmitch/nova,openstack/nova,mahak/nova,mahak/nova,rahulunair/nova