server: let gossiper hand policy update to router

ProcessLocalAnnouncement will attempt to call UpdateEdge with the new
policy. If we call it manually before handing it to the gossiper, that
call will fail with "Outdated" and the announcement won't propagate.

server.go

@@ -2976,22 +2976,6 @@ func extractChannelUpdate(info *channeldb.ChannelEdgeInfo,
 // applyChannelUpdate applies the channel update to the different sub-systems of
 // the server.
 func (s *server) applyChannelUpdate(update *lnwire.ChannelUpdate) error {
-	newChannelPolicy := &channeldb.ChannelEdgePolicy{
-		SigBytes:                  update.Signature.ToSignatureBytes(),
-		ChannelID:                 update.ShortChannelID.ToUint64(),
-		LastUpdate:                time.Unix(int64(update.Timestamp), 0),
-		Flags:                     update.Flags,
-		TimeLockDelta:             update.TimeLockDelta,
-		MinHTLC:                   update.HtlcMinimumMsat,
-		FeeBaseMSat:               lnwire.MilliSatoshi(update.BaseFee),
-		FeeProportionalMillionths: lnwire.MilliSatoshi(update.FeeRate),
-	}
-
-	err := s.chanRouter.UpdateEdge(newChannelPolicy)
-	if err != nil && !routing.IsError(err, routing.ErrIgnored) {
-		return err
-	}
-
 	pubKey := s.identityPriv.PubKey()
 	errChan := s.authGossiper.ProcessLocalAnnouncement(update, pubKey)
 	select {