Cleanup e2e_node test style

Remove the use of  Except(err).NotTo(HaveOccured()), and switch to using
framework ramework.ExpectNoError(err)

test/e2e_node/cpu_manager_test.go

@@ -105,7 +105,7 @@ func getLocalNodeCPUDetails(f *framework.Framework) (cpuCapVal int64, cpuAllocVa
 
 func waitForContainerRemoval(containerName, podName, podNS string) {
 	rs, _, err := getCRIClient()
-	Expect(err).NotTo(HaveOccurred())
+	framework.ExpectNoError(err)
 	Eventually(func() bool {
 		containers, err := rs.ListContainers(&runtimeapi.ContainerFilter{
 			LabelSelector: map[string]string{