Merge "Remove notification permission feature flag" into tm-dev am: af798227 am: 1c7aab67

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



Change-Id: Ie439e1d17ace323879e1c7fa2ceeb0be866954ed
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>