Merge "Remove legacy screenshot notifications flow" into rvc-dev am:...

Merge "Remove legacy screenshot notifications flow" into rvc-dev am: 1e9db44d am: 47cfb686 am: 768d315c am: 15cc5390

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11826322

Change-Id: I0418370ee651764188bc159d6dfce84b43c1c5f1