Merge "Add check to delete app in child only if present." into udc-dev am: a689a311

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22067163



Change-Id: I4b65eb3d7234789924027812e015351377c03b7c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>