Get rid of unused notification_badging_enabled configuration. am: e941d72380 am: 4a24d3635e am: 2f269fa9a9 am: 51c0d78225

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/11959139

Change-Id: Ie45b174522849737915a58bdccde8dd6c6133b9d