After the update to fxp(4) in r194573 we should no longer need

this DELAY(100) hack introduced in r56938.

Thanks to:	yongari
MFC after:	6 weeks
X-MFC note:	not before the fxp(4) changes

sys/net/if.c

@@ -2465,7 +2465,6 @@ ifioctl(struct socket *so, u_long cmd, caddr_t data, struct thread *td)
 
 	if ((oif_flags ^ ifp->if_flags) & IFF_UP) {
 #ifdef INET6
-		DELAY(100);/* XXX: temporary workaround for fxp issue*/
 		if (ifp->if_flags & IFF_UP) {
 			int s = splimp();
 			in6_if_up(ifp);