remove workaround for #1793

The code now does provide all the necessary guarantees. In particular,
the GossipSender.sendAll mark ensures that any complete gossip sent is
always at least as up to date as it was when any previous message was
sent (or dropped).

Fixes #1793.

mesh/local_peer.go

@@ -157,7 +157,7 @@ func (peer *LocalPeer) handleAddConnection(conn Connection) error {
 	}
 
 	peer.router.Routes.Recalculate()
-	peer.broadcastPeerUpdate(conn.Remote())
+	peer.broadcastPeerUpdate()
 
 	return nil
 }