Revert "ANDROID: sched: Add vendor hook to select ilb cpu"

This reverts commit 178eea26.

It causes merge issues with 5.18-rc1 so revert it for now.  If it is
still needed, it can be forward ported after 5.18-rc1 is merged.

Bug: 190228983
Cc: Choonghoon Park <choong.park@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Iaa5cff0ebc6db74f09f7d81d153fa66fe3ac7a63