c627bc54d0f6863f35155b120be80d3382249c2c

Removed the only use of the method. Fixed RebaseChange to pass in the db object. Some other minor cleanups are included too. This is part of the code cleanup to remove the nbrPatchSets field. Change-Id: Iaa7431ea9c96e19c008d8ec25d774e0f7240ba35
Description
RETIRED, Gerrit as used by OpenStack