Remove ClockworkSettingsRoboTests from androidx TEST_MAPPING am: 60dfbe8c46

Original change: https://googleplex-android-review.googlesource.com/c/platform/prebuilts/sdk/+/20290148

Change-Id: Ifcc80adb22638cc60518c5159007c3c9c3e9e5f3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>