Remove more dead code.

pkg/k8s/worker.go

@@ -37,7 +37,6 @@ import (
 
 	api_v1 "k8s.io/api/core/v1"
 	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
-	"k8s.io/client-go/tools/cache"
 	"k8s.io/client-go/tools/record"
 	"k8s.io/client-go/util/workqueue"
 
@@ -218,15 +217,6 @@ func NewNamespaceQueues(
 	}
 }
 
-func getNameSpace(obj interface{}) (namespace, name string, err error) {
-	k, err := cache.DeletionHandlingMetaNamespaceKeyFunc(obj)
-	if err != nil {
-		return
-	}
-	namespace, name, err = cache.SplitMetaNamespaceKey(k)
-	return
-}
-
 func (qs *NamespaceQueues) next() {
 	obj, quit := qs.Queue.Get()
 	if quit {