Merge "Cleanup overview threshold which was only needed for 2-button mode"...

Merge "Cleanup overview threshold which was only needed for 2-button mode" into tm-qpr-dev am: 654ba7f6

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/20524510



Change-Id: I4b79ec1b38509bdc5c7e855d06b529e756f2cdbf
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>