Revert "Add message number constants matching DeleteUser and Del..." am: a509dea343 am: ffbbe860e2 am: 3bfcedaf23

Original change: https://android-review.googlesource.com/c/platform/system/gatekeeper/+/1843815

Change-Id: I9b791ba51c5ca68be34dab5163f1e9812e7a6a27