Revert^2 "Removing some unused code from All-Apps" am: 52f4c16a94 am: f3ea842d7c

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/17923858

Change-Id: I11a69e11c325e32de6d3c1e9557e56a778f20574
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>