Minor cleanup in test.

Author: lovelydinosaur

tests/test_fields.py

@@ -1143,10 +1143,9 @@ class TestDateTimeField(FieldValues):
     valid_inputs = {
         '2001-01-01 13:00': datetime.datetime(2001, 1, 1, 13, 00, tzinfo=utc),
         '2001-01-01T13:00': datetime.datetime(2001, 1, 1, 13, 00, tzinfo=utc),
+        '2001-01-01T13:00Z': datetime.datetime(2001, 1, 1, 13, 00, tzinfo=utc)
         datetime.datetime(2001, 1, 1, 13, 00): datetime.datetime(2001, 1, 1, 13, 00, tzinfo=utc),
         datetime.datetime(2001, 1, 1, 13, 00, tzinfo=utc): datetime.datetime(2001, 1, 1, 13, 00, tzinfo=utc),
-        # Django 1.4 does not support timezone string parsing.
-        '2001-01-01T13:00Z': datetime.datetime(2001, 1, 1, 13, 00, tzinfo=utc)
     }
     invalid_inputs = {
         'abc': ['Datetime has wrong format. Use one of these formats instead: YYYY-MM-DDThh:mm[:ss[.uuuuuu]][+HH:MM|-HH:MM|Z].'],