Do not send reject messages for bad services

The reject message is deprecated, and has also been removed from the most
recent protocol version entirely.

Although the reject could be sent after a check of the negotiated pver,
there's no value to sending a reject to a peer for bad advertised services.
No message was ever rejected from being received by the remote peer.

p2p/peering.go

@@ -259,11 +259,8 @@ func (lp *LocalPeer) ConnectOutbound(ctx context.Context, addr string, reqSvcs w
 	// Disconnect from the peer if it does not specify all required services.
 	if rp.services&reqSvcs != reqSvcs {
 		op := errors.Opf(opf, rp.raddr)
-		reason := errors.Errorf("missing required service flags %v", reqSvcs&^rp.services)
-		reject := wire.NewMsgReject(wire.CmdVersion, wire.RejectNonstandard, reason.Error())
-		rp.sendMessageAck(ctx, reject)
-
-		err := errors.E(op, reason)
+		err := errors.E(op, errors.Errorf("missing required service flags %v",
+			reqSvcs&^rp.services))
 		rp.Disconnect(err)
 		return nil, err
 	}