Merge "Allow removing the last app from home controls" into tm-qpr-dev am: 61e9d75d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21591532



Change-Id: Iaacfc84e14fb6d4e47dffc2839930ddbcef3be86
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>