Revert "sctp: fix missing include file"

This reverts commit ac0917f2.

Better version of this fix forthcoming.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/sctp/input.c

@@ -48,7 +48,6 @@
 #include <linux/time.h> /* For struct timeval */
 #include <linux/slab.h>
 #include <net/ip.h>
-#include <net/ip6_route.h>
 #include <net/icmp.h>
 #include <net/snmp.h>
 #include <net/sock.h>