Merge pull request #86775 from Aresforchina/fix-staticcheck-test03

fix staticcheck of pkg/util/ebtables

hack/.staticcheck_failures

@@ -20,7 +20,6 @@ pkg/registry/core/service/ipallocator
 pkg/registry/core/service/portallocator
 pkg/registry/core/service/storage
 pkg/util/coverage
-pkg/util/ebtables
 pkg/util/ipconfig
 pkg/util/iptables
 pkg/util/ipvs/testing

pkg/util/ebtables/ebtables.go

@@ -20,7 +20,6 @@ import (
 	"fmt"
 	"regexp"
 	"strings"
-	"sync"
 
 	utilexec "k8s.io/utils/exec"
 )
@@ -86,7 +85,6 @@ type Interface interface {
 
 // runner implements Interface in terms of exec("ebtables").
 type runner struct {
-	mu   sync.Mutex
 	exec utilexec.Interface
 }