Remove some dead code in the ipvs proxy

cmd/kube-proxy/app/server_others.go

@@ -108,7 +108,7 @@ func newProxyServer(
 	}
 
 	if canUseIPVS {
-		ipvsInterface = utilipvs.New(execer)
+		ipvsInterface = utilipvs.New()
 	}
 
 	// We omit creation of pretty much everything if we run in cleanup mode

pkg/util/ipvs/ipvs_linux.go

@@ -31,12 +31,10 @@ import (
 	libipvs "github.com/moby/ipvs"
 
 	"k8s.io/klog/v2"
-	utilexec "k8s.io/utils/exec"
 )
 
 // runner implements ipvs.Interface.
 type runner struct {
-	exec       utilexec.Interface
 	ipvsHandle *libipvs.Handle
 	mu         sync.Mutex // Protect Netlink calls
 }
@@ -45,14 +43,13 @@ type runner struct {
 type Protocol uint16
 
 // New returns a new Interface which will call ipvs APIs.
-func New(exec utilexec.Interface) Interface {
+func New() Interface {
 	handle, err := libipvs.New("")
 	if err != nil {
 		klog.Errorf("IPVS interface can't be initialized, error: %v", err)
 		return nil
 	}
 	return &runner{
-		exec:       exec,
 		ipvsHandle: handle,
 	}
 }

pkg/util/ipvs/ipvs_unsupported.go

@@ -22,12 +22,10 @@ package ipvs
 import (
 	"fmt"
 	"time"
-
-	utilexec "k8s.io/utils/exec"
 )
 
 // New returns a dummy Interface for unsupported platform.
-func New(utilexec.Interface) Interface {
+func New() Interface {
 	return &runner{}
 }
 

pkg/util/ipvs/kernelcheck_unsupported.go

@@ -1,40 +0,0 @@
-//go:build !linux
-// +build !linux
-
-/*
-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 ipvs
-
-import (
-	utilsexec "k8s.io/utils/exec"
-)
-
-// RequiredIPVSKernelModulesAvailableCheck tests IPVS required kernel modules.
-type RequiredIPVSKernelModulesAvailableCheck struct {
-	Executor utilsexec.Interface
-}
-
-// Name returns label for RequiredIPVSKernelModulesAvailableCheck
-func (r RequiredIPVSKernelModulesAvailableCheck) Name() string {
-	return "RequiredIPVSKernelModulesAvailable"
-}
-
-// Check try to validates IPVS required kernel modules exists or not.
-func (r RequiredIPVSKernelModulesAvailableCheck) Check() (warnings, errors []error) {
-
-	return nil, nil
-}