Remove v1 filtering

Author: okokes-akamai

cloud/linode/loadbalancers.go

@@ -450,13 +450,6 @@ func (l *loadbalancers) getNodeBalancerByHostname(ctx context.Context, service *
 }
 
 func (l *loadbalancers) getNodeBalancerByIPv4(ctx context.Context, service *v1.Service, ipv4 string) (*linodego.NodeBalancer, error) {
-	// TODO: use this constructor once we merge in linodego v1 update
-	// f := &linodego.Filter{}
-	// f.AddField(linodego.Eq, "ipv4", ipv4)
-	// filter, err := f.MarshalJSON()
-	// if err != nil {
-	// 	return nil, err
-	// }
 	filter := fmt.Sprintf(`{"ipv4": "%v"}`, ipv4)
 	lbs, err := l.client.ListNodeBalancers(ctx, &linodego.ListOptions{Filter: filter})
 	if err != nil {