block: Remove used kblockd_schedule_work_on()

Commit ee63cfa7 ("block: add kblockd_schedule_work_on()")
introduced the helper in 2016. Remove it because since then no caller
was added.

Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: NDaniel Wagner <dwagner@suse.de>
Signed-off-by: NJens Axboe <axboe@kernel.dk>

block/blk-core.c

@@ -1663,12 +1663,6 @@ int kblockd_schedule_work(struct work_struct *work)
 }
 EXPORT_SYMBOL(kblockd_schedule_work);
 
-int kblockd_schedule_work_on(int cpu, struct work_struct *work)
-{
-	return queue_work_on(cpu, kblockd_workqueue, work);
-}
-EXPORT_SYMBOL(kblockd_schedule_work_on);
-
 int kblockd_mod_delayed_work_on(int cpu, struct delayed_work *dwork,
 				unsigned long delay)
 {

include/linux/blkdev.h

@@ -1494,7 +1494,6 @@ static inline void put_dev_sector(Sector p)
 }
 
 int kblockd_schedule_work(struct work_struct *work);
-int kblockd_schedule_work_on(int cpu, struct work_struct *work);
 int kblockd_mod_delayed_work_on(int cpu, struct delayed_work *dwork, unsigned long delay);
 
 #define MODULE_ALIAS_BLOCKDEV(major,minor) \