Remove the xfs_btree_get_bufs and xfs_btree_get_bufl functions, since
they're pretty trivial oneliners.
Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NDave Chinner <dchinner@redhat.com>