Revert^2 "Frozen-aware RemoteCallbackList" am: 04f26a4953

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/3336654

Change-Id: Ife24b9e4b74bd22cc708c536ca7d13a31b741db5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>