Merge "Remove notification permission feature flag" into tm-dev am: 23a85a1f96 am: 8e41734caf am: c92e89217f

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/18164272

Change-Id: Ifb83dd00a1cab592ba951c76067bc472054e637f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>