Completed all recommended removals in #1428. Did not address any othe…

…r changes in the original PR outside the scope of this issue

plugin/evm/message/codec.go

@@ -15,19 +15,14 @@ const (
 	maxMessageSize = 2*units.MiB - 64*units.KiB // Subtract 64 KiB from p2p network cap to leave room for encoding overhead from AvalancheGo
 )
 
-var (
-	Codec codec.Manager
-)
+var Codec codec.Manager
 
 func init() {
 	Codec = codec.NewManager(maxMessageSize)
 	c := linearcodec.NewDefault()
 
 	errs := wrappers.Errs{}
 	errs.Add(
-		// Gossip types
-		c.RegisterType(EthTxsGossip{}),
-
 		// Types for state sync frontier consensus
 		c.RegisterType(SyncSummary{}),
 

plugin/evm/message/handler.go

@@ -6,27 +6,10 @@ package message
 import (
 	"context"
 
-	"github.com/ethereum/go-ethereum/log"
-
 	"github.com/ava-labs/avalanchego/ids"
 )
 
-var (
-	_ GossipHandler  = NoopMempoolGossipHandler{}
-	_ RequestHandler = NoopRequestHandler{}
-)
-
-// GossipHandler handles incoming gossip messages
-type GossipHandler interface {
-	HandleEthTxs(nodeID ids.NodeID, msg EthTxsGossip) error
-}
-
-type NoopMempoolGossipHandler struct{}
-
-func (NoopMempoolGossipHandler) HandleEthTxs(nodeID ids.NodeID, msg EthTxsGossip) error {
-	log.Debug("dropping unexpected EthTxsGossip message", "peerID", nodeID)
-	return nil
-}
+var _ RequestHandler = NoopRequestHandler{}
 
 // RequestHandler interface handles incoming requests from peers
 // Must have methods in format of handleType(context.Context, ids.NodeID, uint32, request Type) error