Merge "Remove sleep in test app." into udc-dev am: 70411eee am: b81c32da

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



Change-Id: I9ac09930d1e0b97f91fd40ccc02dc7d57ac1968d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>