btrfs: need_resched not needed with cond_resched

Cleanup, no special reason to do

if (need_resched())
        cond_resched();
Signed-off-by: NDavid Sterba <dsterba@suse.cz>

fs/btrfs/volumes.c

@@ -366,7 +366,7 @@ static noinline void run_scheduled_bios(struct btrfs_device *device)
 		btrfsic_submit_bio(cur->bi_rw, cur);
 		num_run++;
 		batch_run++;
-		if (need_resched())
+
 		cond_resched();
 
 		/*
@@ -400,7 +400,6 @@ static noinline void run_scheduled_bios(struct btrfs_device *device)
 				 * against it before looping
 				 */
 				last_waited = ioc->last_waited;
-				if (need_resched())
 				cond_resched();
 				continue;
 			}