Revert "Handle resume of VABC updates by emitting labels" am: 59928f18f7 am: 123c3e136c am: 8e387c02a6

Original change: https://android-review.googlesource.com/c/platform/system/update_engine/+/1496997

Change-Id: I9f9f287835252bf178deeee6ae1654d89e3bad89