sched/rt: Remove 'leaf_rt_rq_list' from 'struct rq'

This is a leftover from commit e23ee747
("sched/rt: Simplify pull_rt_task() logic and remove .leaf_rt_rq_list").

Signed-off-by: Li Zefan <lizefan@huawei.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/52F5CBF6.4060901@huawei.com


Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>