Eclass Task 1: clean up old equiv class code

Co-authored-by: Harry Zhang <resouer@gmail.com>
Co-authored-by: Wang Qingcan <wangqingcan@baidu.com>

test/integration/util/util.go

@@ -21,14 +21,12 @@ import (
 	"net/http/httptest"
 
 	"k8s.io/api/core/v1"
-	utilfeature "k8s.io/apiserver/pkg/util/feature"
 	"k8s.io/client-go/informers"
 	clientset "k8s.io/client-go/kubernetes"
 	clientv1core "k8s.io/client-go/kubernetes/typed/core/v1"
 	"k8s.io/client-go/tools/record"
 	"k8s.io/klog"
 	"k8s.io/kubernetes/pkg/api/legacyscheme"
-	"k8s.io/kubernetes/pkg/features"
 	"k8s.io/kubernetes/pkg/scheduler"
 	schedulerapi "k8s.io/kubernetes/pkg/scheduler/api"
 	"k8s.io/kubernetes/pkg/scheduler/factory"
@@ -94,6 +92,7 @@ func createSchedulerConfigurator(
 	informerFactory informers.SharedInformerFactory,
 	stopCh <-chan struct{},
 ) factory.Configurator {
+
 	return factory.NewConfigFactory(&factory.ConfigFactoryArgs{
 		SchedulerName:                  v1.DefaultSchedulerName,
 		Client:                         clientSet,
@@ -108,7 +107,6 @@ func createSchedulerConfigurator(
 		PdbInformer:                    informerFactory.Policy().V1beta1().PodDisruptionBudgets(),
 		StorageClassInformer:           informerFactory.Storage().V1().StorageClasses(),
 		HardPodAffinitySymmetricWeight: v1.DefaultHardPodAffinitySymmetricWeight,
-		EnableEquivalenceClassCache:    utilfeature.DefaultFeatureGate.Enabled(features.EnableEquivalenceClassCache),
 		DisablePreemption:              false,
 		PercentageOfNodesToScore:       schedulerapi.DefaultPercentageOfNodesToScore,
 		StopCh:                         stopCh,