Remove IwTest annotation. am: 8e2f266dff am: 4864344d13

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/23716002

Change-Id: If98bedf0f8c88e597322a7766c86242bb2dcf2a0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>