remove some unused const in test/e2e_node

test/e2e_node/device_plugin.go

@@ -41,8 +41,7 @@ import (
 
 const (
 	// fake resource name
-	resourceName                 = "fake.com/resource"
-	resourceNameWithProbeSupport = "fake.com/resource2"
+	resourceName = "fake.com/resource"
 )
 
 // Serial because the test restarts Kubelet

test/e2e_node/gpu_device_plugin.go

@@ -32,10 +32,6 @@ import (
 	"github.com/prometheus/common/model"
 )
 
-const (
-	testPodNamePrefix = "nvidia-gpu-"
-)
-
 // Serial because the test restarts Kubelet
 var _ = framework.KubeDescribe("NVIDIA GPU Device Plugin [Feature:GPUDevicePlugin][NodeFeature:GPUDevicePlugin][Serial] [Disruptive]", func() {
 	f := framework.NewDefaultFramework("device-plugin-gpus-errors")