xfs: Remove dead function prototype xfs_sync_inode_grab()

Remove dead function prototype xfs_sync_inode_grab()
from xfs_icache.h.
Signed-off-by: Jie Liu <jeff.liu@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>

fs/xfs/xfs_icache.h

@@ -40,7 +40,6 @@ void xfs_inode_clear_eofblocks_tag(struct xfs_inode *ip);
 int xfs_icache_free_eofblocks(struct xfs_mount *, struct xfs_eofblocks *);
 void xfs_eofblocks_worker(struct work_struct *);
 
-int xfs_sync_inode_grab(struct xfs_inode *ip);
 int xfs_inode_ag_iterator(struct xfs_mount *mp,
 	int (*execute)(struct xfs_inode *ip, struct xfs_perag *pag,
 		int flags, void *args),