xfs: remove the unused xfs_bufhash structure

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
diff --git a/fs/xfs/linux-2.6/xfs_buf.h b/fs/xfs/linux-2.6/xfs_buf.h
index 50a7d5f..6847dc4 100644
--- a/fs/xfs/linux-2.6/xfs_buf.h
+++ b/fs/xfs/linux-2.6/xfs_buf.h
@@ -91,11 +91,6 @@
 	XBT_FORCE_FLUSH = 1,
 } xfs_buftarg_flags_t;
 
-typedef struct xfs_bufhash {
-	struct list_head	bh_list;
-	spinlock_t		bh_lock;
-} xfs_bufhash_t;
-
 typedef struct xfs_buftarg {
 	dev_t			bt_dev;
 	struct block_device	*bt_bdev;