[IPV6]: Do not send RH0 anymore.

Based on <draft-ietf-ipv6-deprecate-rh0-00.txt>.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
index ba1386d..fe0f490 100644
--- a/net/ipv6/datagram.c
+++ b/net/ipv6/datagram.c
@@ -657,11 +657,10 @@
 			rthdr = (struct ipv6_rt_hdr *)CMSG_DATA(cmsg);
 
 			switch (rthdr->type) {
-			case IPV6_SRCRT_TYPE_0:
 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
 			case IPV6_SRCRT_TYPE_2:
-#endif
 				break;
+#endif
 			default:
 				err = -EINVAL;
 				goto exit_f;