Merge "Remove sleep in test app." into udc-dev am: 70411eee am: 397d7b7d am: 82fa058c

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



Change-Id: I975398d56bda6582514cc76f598af178eb026802
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>