Impact: clean up

those code pcpu_need_numa(), should be removed.
Signed-off-by: NYinghai Lu <yinghai@kernel.org>
Acked-by: NTejun Heo <tj@kernel.org>
Acked-by: NDavid Miller <davem@davemloft.net>
LKML-Reference: <49D31770.9090502@kernel.org>
Signed-off-by: NIngo Molnar <mingo@elte.hu>