Don't check for duplicate buffered updates in buffer_update.

This is no longer needed now that duplicates are checked in flushupdates.

message.c

@@ -863,19 +863,11 @@ static void
 buffer_update(struct network *net,
               const unsigned char *prefix, unsigned char plen)
 {
-    int i;
-
     if(update_net && update_net != net)
         flushupdates();
 
     update_net = net;
 
-    for(i = 0; i < updates; i++) {
-        if(buffered_updates[i].plen == plen &&
-           memcmp(buffered_updates[i].prefix, prefix, 16) == 0)
-            return;
-    }
-
     if(updates >= MAX_BUFFERED_UPDATES)
         flushupdates();
     memcpy(buffered_updates[updates].prefix, prefix, 16);