[RESTRICT AUTOMERGE] AccessibilityManagerService: remove uninstalled services...

[RESTRICT AUTOMERGE] AccessibilityManagerService: remove uninstalled services from enabled list after service update. am: 766911c3 am: 2229cd9d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/26709088



Change-Id: Id50ebe9f0f9924c218613c85f6adee23945afed2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>