block: Remove 'plug/unplug' comment in blk_execute_rq_nowait
block: Remove 'plug/unplug' comment in blk_execute_rq_nowait

unplug is replaced with blk_run_queue now in blk_execute_rq_nowait,
so change the comment accordingly.

Signed-off-by: Tao Ma <85dcca6eaef7f88f8513274f73363a9b5feab3ec@taobao.com>
Signed-off-by: Jens Axboe <08e836a620179c237f631ad0545a7ebdf54201f3@fusionio.com>

KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas