Remove background cpuset setting am: 5f600515e7 am: 9af13e4a93 am: c558160d70

Original change: https://googleplex-android-review.googlesource.com/c/device/google/lynx/+/22953955

Change-Id: Id3a89ec265686278d4de960540a4d92095c64f63
Signed-off-by: Automerger Merge Worker <[email protected]>