Don't perform triggered updates in update_neighbour.

This is more taken care of in update_neighbour_metric.

neighbour.c

@@ -192,7 +192,6 @@ update_neighbour(struct neighbour *neigh, int hello, int hello_interval)
         if((a == 0xC000 && b == 0) || (a == 0 && b == 0x3000)) {
             /* Reachability is either 1100 or 0011 */
             send_self_update(neigh->network, 0);
-            send_neighbour_update(neigh, NULL);
         }
     }