Merge "Remove volume_separate_notification flag" into udc-dev am: 7aa8424c...

Merge "Remove volume_separate_notification flag" into udc-dev am: 7aa8424c am: 66dd57ea am: afa72d6f

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/23244447



Change-Id: Ia240bbebe36b61adf1b731780fa746eea0f2936f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>