node: remove unused error return from Attach (#27450)

node: Delete the unused error from return parameters of Node.Attach() func

cmd/geth/consolecmd.go

@@ -75,10 +75,7 @@ func localConsole(ctx *cli.Context) error {
 	defer stack.Close()
 
 	// Attach to the newly started node and create the JavaScript console.
-	client, err := stack.Attach()
-	if err != nil {
-		return fmt.Errorf("failed to attach to the inproc geth: %v", err)
-	}
+	client := stack.Attach()
 	config := console.Config{
 		DataDir: utils.MakeDataDir(ctx),
 		DocRoot: ctx.String(utils.JSpathFlag.Name),

cmd/geth/main.go

@@ -346,10 +346,7 @@ func startNode(ctx *cli.Context, stack *node.Node, backend ethapi.Backend, isCon
 	stack.AccountManager().Subscribe(events)
 
 	// Create a client to interact with local geth node.
-	rpcClient, err := stack.Attach()
-	if err != nil {
-		utils.Fatalf("Failed to attach to self: %v", err)
-	}
+	rpcClient := stack.Attach()
 	ethClient := ethclient.NewClient(rpcClient)
 
 	go func() {