Remove unittest2 dependencyi

src/plone/app/theming/tests/test_controlpanel.py

@@ -6,7 +6,7 @@
 from plone.app.theming.testing import THEMING_FUNCTIONAL_TESTING
 from plone.testing.z2 import Browser
 
-import unittest2 as unittest
+import unittest
 
 
 class TestControlPanel(unittest.TestCase):

src/plone/app/theming/tests/test_exportimport.py

@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 from plone.app.theming.testing import THEMING_INTEGRATION_TESTING
 
-import unittest2 as unittest
+import unittest
 
 
 class TestExportImport(unittest.TestCase):

src/plone/app/theming/tests/test_policy.py

@@ -7,7 +7,7 @@
 import threading
 import time
 import transaction
-import unittest2 as unittest
+import unittest
 
 
 class TestFunctional(unittest.TestCase):

src/plone/app/theming/tests/test_transform.py

@@ -23,7 +23,7 @@
 
 import os.path
 import re
-import unittest2 as unittest
+import unittest
 
 
 class TestCase(unittest.TestCase):

src/plone/app/theming/tests/test_utils.py

@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 from plone.app.theming.testing import THEMING_INTEGRATION_TESTING
 
-import unittest2 as unittest
+import unittest
 
 
 class TestIntegration(unittest.TestCase):