Merge "Remove unused widgets_scroll_container layout" into sc-dev am: 239101c512

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/13754138

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I04adf23d9f54f3285578d86d5887c9159fbf1b10