Merge "Allow uninstalling DMRH when not used for management" into udc-dev am: 3666ab81

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/29703207



Change-Id: I7174005081a5edc25617d1d0d44c3aef6045c25f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>