Remove unused uiautomator lib from RemoteProvisionerUnitTests am: 31e9d6d845

Original change: https://android-review.googlesource.com/c/platform/packages/apps/RemoteProvisioner/+/2457388

Change-Id: I2505d6d25dbb02828a510ec766c5c73634b2ec0d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>