Merge "Remove users via adb command instead of polling to check if removed."...

Merge "Remove users via adb command instead of polling to check if removed." into udc-dev am: 4efefb6a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22849717



Change-Id: If3ae1daeca0b528b23aa74c71c244968c5bef1ec
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>