Merge "Remove unused/obsolete feature flags" into udc-dev am: 4f69ca52ef

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/23219342

Change-Id: Ie52eaf2716c006d17adcc7b13e223e6dc76d7801
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>