Merge "Remove notification permission feature flag" into tm-dev am: af798227 am: e62f470c am: b8edf75a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18164160



Change-Id: Idfa74fcd6e7cf80ee88de1958234d505eb0777f2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>