Merge "Camera: Remove redundant RequestThread wait during flush" into tm-dev...

Merge "Camera: Remove redundant RequestThread wait during flush" into tm-dev am: a62a9805 am: 31d67380

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/17650555



Change-Id: Ie29fc5cdab0016104a4f82ea95cea772edc36ed9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>