Merge "Unregister all the receivers during test teardown." into tm-qpr-dev am: c1fee021

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20255704



Change-Id: Idd1c964a9f37f462b3a566b29b16fb845138e825
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>