ufs: remove unessecary blk_flush_plug

We already flush the per-process plugging list when context switching,
so a blk_flush_plug call just before a yield() is not needed.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>

fs/ufs/truncate.c

@@ -479,7 +479,6 @@ int ufs_truncate(struct inode *inode, loff_t old_i_size)
 			break;
 		if (IS_SYNC(inode) && (inode->i_state & I_DIRTY))
 			ufs_sync_inode (inode);
-		blk_flush_plug(current);
 		yield();
 	}