Cleanup old XFS_BTREE_* traces

Remove unused legacy btree traces from IRIX era.

Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
diff --git a/fs/xfs/libxfs/xfs_bmap_btree.c b/fs/xfs/libxfs/xfs_bmap_btree.c
index 9faf479..d89d06b 100644
--- a/fs/xfs/libxfs/xfs_bmap_btree.c
+++ b/fs/xfs/libxfs/xfs_bmap_btree.c
@@ -272,10 +272,10 @@ xfs_bmbt_alloc_block(
 		cur->bc_private.b.dfops->dop_low = true;
 	}
 	if (WARN_ON_ONCE(args.fsbno == NULLFSBLOCK)) {
-		XFS_BTREE_TRACE_CURSOR(cur, XBT_EXIT);
 		*stat = 0;
 		return 0;
 	}
+
 	ASSERT(args.len == 1);
 	cur->bc_private.b.firstblock = args.fsbno;
 	cur->bc_private.b.allocated++;
@@ -286,12 +286,10 @@ xfs_bmbt_alloc_block(
 
 	new->l = cpu_to_be64(args.fsbno);
 
-	XFS_BTREE_TRACE_CURSOR(cur, XBT_EXIT);
 	*stat = 1;
 	return 0;
 
  error0:
-	XFS_BTREE_TRACE_CURSOR(cur, XBT_ERROR);
 	return error;
 }