remove unused code in test/e2e/apps/deployment

Author: tanjunchen

test/e2e/apps/BUILD

@@ -41,7 +41,6 @@ go_library(
         "//staging/src/k8s.io/api/batch/v1:go_default_library",
         "//staging/src/k8s.io/api/batch/v1beta1:go_default_library",
         "//staging/src/k8s.io/api/core/v1:go_default_library",
-        "//staging/src/k8s.io/api/extensions/v1beta1:go_default_library",
         "//staging/src/k8s.io/api/policy/v1beta1:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/api/errors:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/api/resource:go_default_library",

test/e2e/apps/deployment.go

@@ -28,7 +28,6 @@ import (
 
 	appsv1 "k8s.io/api/apps/v1"
 	v1 "k8s.io/api/core/v1"
-	extensionsv1beta1 "k8s.io/api/extensions/v1beta1"
 	apierrors "k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/labels"
@@ -187,14 +186,6 @@ func intOrStrP(num int) *intstr.IntOrString {
 	return &intstr
 }
 
-func newDeploymentRollback(name string, annotations map[string]string, revision int64) *extensionsv1beta1.DeploymentRollback {
-	return &extensionsv1beta1.DeploymentRollback{
-		Name:               name,
-		UpdatedAnnotations: annotations,
-		RollbackTo:         extensionsv1beta1.RollbackConfig{Revision: revision},
-	}
-}
-
 func stopDeployment(c clientset.Interface, ns, deploymentName string) {
 	deployment, err := c.AppsV1().Deployments(ns).Get(deploymentName, metav1.GetOptions{})
 	framework.ExpectNoError(err)