Remove IwTest annotation. am: 8e2f266dff

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

Change-Id: I4b5cb78bc975c1f96b439c5cbda0a02d1068f379
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>