Revert "Clearing up invalid entries when SyncStorageEngine starts" am: 4a9d358448 am: 0597a93629  -s ours am: d2455f8fa2 am: 2d194e5958 am: 57bbf9bb9c am: cf16ef09da am: f0d00e51ba
am: 4e61bdb7d3

Change-Id: I6baddf0fcdcdd5a1236f69f5b19c67aa1e35b3c2