ipv4: drop fragmentation code from ip_options_build()

Since v2.5.44 and addition of ip_options_fragment()
ip_options_build() does not render headers for fragments
directly. @is_frag is always 0.

Signed-off-by: Jakub Kicinski <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
diff --git a/include/net/ip.h b/include/net/ip.h
index b51bae4..fdbab0c 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -712,7 +712,7 @@ int ip_forward(struct sk_buff *skb);
  */
 
 void ip_options_build(struct sk_buff *skb, struct ip_options *opt,
-		      __be32 daddr, struct rtable *rt, int is_frag);
+		      __be32 daddr, struct rtable *rt);
 
 int __ip_options_echo(struct net *net, struct ip_options *dopt,
 		      struct sk_buff *skb, const struct ip_options *sopt);