update_engine: remove temporary estimation am: 018bcd79f1 am: 132ef1cadb

Original change: https://android-review.googlesource.com/c/platform/system/update_engine/+/2954478

Change-Id: I934eef6af6f3046901017e6ea2a4421179b54f5c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>