fixup! py2/py3: import cStringIO from six.moves.

product/ERP5Type/tests/ERP5TypeLiveTestCase.py

@@ -259,7 +259,7 @@ class ERP5TypeTestReLoader(ERP5TypeTestLoader):
 
 def runLiveTest(test_list, verbosity=1, stream=None, request_server_url=None, **kw):
   from Products.ERP5Type.tests.runUnitTest import DebugTestResult
-  from six.moves import cStringIO as StringIO
+  from six.moves import StringIO
   # Add path of the TestTemplateItem folder of the instance
   path = kw.get('path', None)
   if path is not None and path not in sys.path: