Remove background cpuset setting am: 5f600515e7 am: 1e7c5703aa am: 99246c4d2c

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

Change-Id: Ic3dd72440ae1d655225d89b8c0ed614282ef1763
Signed-off-by: Automerger Merge Worker <[email protected]>