Merge "Remove sleep in test app." into udc-dev am: 70411eee am: 5a520cfd

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/services/Telecomm/+/22998119



Change-Id: I181a06a0d65a95f9effc4b20370189a46c859429
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>