sched: Remove noop in alloc_rt_sched_group()

The rq varible, though computed for each possible cpu, has nothing to
do in the function, so it can be removed.

This also eliminates a build warning.

Signed-off-by: Hillf Danton <dhillf@gmail.com>
Reviewed-by: Yong Zhang <yong.zhang0@gmail.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/BANLkTin-FfQfqW5ym1iuEmrk8s777Y1LAg@mail.gmail.com


Signed-off-by: Ingo Molnar <mingo@elte.hu>