Refs #3012 -- Removed iterator from test_data_types cache test that…

… I added in [5703]. Iterators cannot be pickled either. Left the rest of [5703] there though since it fixed another issue that was causing the `test_data_types` cache test to fail with the `locmem` cache backend, the fact that functions cannot be copied.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@5716 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/regressiontests/cache/tests.py

@@ -60,7 +60,6 @@ def test_data_types(self):
             'dict'      : {'A': 1, 'B' : 2},
             'function'  : f,
             'class'     : C,
-            'iter'      : iter([1, 2 ,3]),
         }
         for (key, value) in stuff.items():
             cache.set(key, value)