ipv4: remove unused member in fib_table.

This patch removes an unused parameter (tb_stamp) from fib_table
structure in include/net/ip_fib.h.

Signed-off-by: Rami Rosen <ramirose@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h
index 8b12667..34855ee 100644
--- a/include/net/ip_fib.h
+++ b/include/net/ip_fib.h
@@ -145,7 +145,6 @@
 struct fib_table {
 	struct hlist_node tb_hlist;
 	u32		tb_id;
-	unsigned	tb_stamp;
 	int		tb_default;
 	int		(*tb_lookup)(struct fib_table *tb, const struct flowi *flp, struct fib_result *res);
 	int		(*tb_insert)(struct fib_table *, struct fib_config *);