drop unused code pointed out by linter

Signed-off-by: Davanum Srinivas <davanum@gmail.com>

test/integration/ipamperf/util.go

@@ -1,82 +0,0 @@
-/*
-Copyright 2018 The Kubernetes Authors.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-package ipamperf
-
-import (
-	"context"
-	"time"
-
-	"k8s.io/api/core/v1"
-	apierrors "k8s.io/apimachinery/pkg/api/errors"
-	"k8s.io/apimachinery/pkg/api/resource"
-	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	clientset "k8s.io/client-go/kubernetes"
-	"k8s.io/klog/v2"
-)
-
-const (
-	maxCreateRetries = 10
-	retryDelay       = 10 * time.Second
-)
-
-var (
-	baseNodeTemplate = &v1.Node{
-		ObjectMeta: metav1.ObjectMeta{
-			GenerateName: "sample-node-",
-		},
-		Status: v1.NodeStatus{
-			Capacity: v1.ResourceList{
-				v1.ResourcePods:   *resource.NewQuantity(110, resource.DecimalSI),
-				v1.ResourceCPU:    resource.MustParse("4"),
-				v1.ResourceMemory: resource.MustParse("32Gi"),
-			},
-			Phase: v1.NodeRunning,
-			Conditions: []v1.NodeCondition{
-				{Type: v1.NodeReady, Status: v1.ConditionTrue},
-			},
-		},
-	}
-)
-
-func deleteNodes(clientSet *clientset.Clientset) {
-	klog.Info("Deleting nodes")
-	noGrace := int64(0)
-	if err := clientSet.CoreV1().Nodes().DeleteCollection(context.TODO(), metav1.DeleteOptions{GracePeriodSeconds: &noGrace}, metav1.ListOptions{}); err != nil {
-		klog.Errorf("Error deleting node: %v", err)
-	}
-}
-
-func createNodes(clientSet *clientset.Clientset, config *Config) error {
-	klog.Infof("Creating %d nodes", config.NumNodes)
-	for i := 0; i < config.NumNodes; i++ {
-		var err error
-		for j := 0; j < maxCreateRetries; j++ {
-			if _, err = clientSet.CoreV1().Nodes().Create(context.TODO(), baseNodeTemplate, metav1.CreateOptions{}); err != nil && apierrors.IsServerTimeout(err) {
-				klog.Infof("Server timeout creating nodes, retrying after %v", retryDelay)
-				time.Sleep(retryDelay)
-				continue
-			}
-			break
-		}
-		if err != nil {
-			klog.Errorf("Error creating nodes: %v", err)
-			return err
-		}
-	}
-	klog.Infof("%d nodes created", config.NumNodes)
-	return nil
-}