Use e2epod.WaitForPodNameRunningInNamespace directly

WaitForPod*() are just wrapper functions for e2epod package, and they
made an invalid dependency to sub e2e framework from the core framework.
So this replaces WaitForPodRunning() with the e2epod function.

test/e2e/storage/empty_dir_wrapper.go

@@ -418,7 +418,7 @@ func testNoWrappedVolumeRace(f *framework.Framework, volumes []v1.Volume, volume
 		if pod.DeletionTimestamp != nil {
 			continue
 		}
-		err = f.WaitForPodRunning(pod.Name)
+		err = e2epod.WaitForPodNameRunningInNamespace(f.ClientSet, pod.Name, f.Namespace.Name)
 		framework.ExpectNoError(err, "Failed waiting for pod %s to enter running state", pod.Name)
 	}
 }