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.
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.

--HG--
extra : convert_revision : svn%3Abcc190cf-cafb-0310-a4f2-bffc1f526a37/django/trunk%405716

adieu/django-nonrel,adieu/django-nonrel,adieu/django-nonrel