htlcswitch: remove no longer needed destNode field in htlcPacket

htlcswitch/packet.go

@@ -8,10 +8,6 @@ import (
 // htlcPacket is a wrapper around htlc lnwire update, which adds additional
 // information which is needed by this package.
 type htlcPacket struct {
-	// destNode is the first-hop destination of a local created HTLC add
-	// message.
-	destNode [33]byte
-
 	// incomingChanID is the ID of the channel that we have received an incoming
 	// HTLC on.
 	incomingChanID lnwire.ShortChannelID

htlcswitch/switch.go

@@ -371,7 +371,6 @@ func (s *Switch) SendHTLC(firstHop lnwire.ShortChannelID,
 		incomingChanID: sourceHop,
 		incomingHTLCID: paymentID,
 		outgoingChanID: firstHop,
-		destNode:       nextNode,
 		htlc:           htlc,
 	}