diff --git a/staging/src/k8s.io/mount-utils/mount_linux_test.go b/staging/src/k8s.io/mount-utils/mount_linux_test.go
index dec91c72050..0fcb156ee9f 100644
--- a/staging/src/k8s.io/mount-utils/mount_linux_test.go
+++ b/staging/src/k8s.io/mount-utils/mount_linux_test.go
@@ -705,28 +705,3 @@ func makeFakeCommandAction(stdout string, err error, cmdFn func()) testexec.Fake
 		return testexec.InitFakeCmd(&c, cmd, args...)
 	}
 }
-
-func TestNotMountedBehaviorOfUnmount(t *testing.T) {
-	target, err := ioutil.TempDir("", "kubelet-umount")
-	if err != nil {
-		t.Errorf("Cannot create temp dir: %v", err)
-	}
-
-	defer os.RemoveAll(target)
-
-	m := Mounter{withSafeNotMountedBehavior: true}
-	if err = m.Unmount(target); err != nil {
-		t.Errorf(`Expect complete Unmount(), but it dose not: %v`, err)
-	}
-
-	if err = tryUnmount(target, m.withSafeNotMountedBehavior, time.Minute); err != nil {
-		t.Errorf(`Expect complete tryUnmount(), but it does not: %v`, err)
-	}
-
-	// forceUmount exec "umount -f", so skip this case if user is not root.
-	if os.Getuid() == 0 {
-		if err = forceUmount(target, m.withSafeNotMountedBehavior); err != nil {
-			t.Errorf(`Expect complete forceUnmount(), but it does not: %v`, err)
-		}
-	}
-}