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

Change-Id: I4e775fd5b0c2ad74e92ef84ac1b1e2f307d6b54e