No docstrings for tests.

theano/gof/tests/test_fg.py

@@ -32,14 +32,11 @@ class TFunctionGraph(unittest.TestCase):
         pickle.loads(s)
 
     def test_node_outputs_not_used(self):
-        """In the past, we where removing some not used variable from
-        fgraph.variables event if the apply had other output used in
-        the graph. This caused a crash.
-
-        This test run the pickle that reproduce this case.
-        """
-        if sys.version_info[:2] < (2, 7):
-            raise SkipTest("This test need python 2.7 or more recent.")
+        # In the past, we where removing some not used variable from
+        # fgraph.variables event if the apply had other output used in
+        # the graph. This caused a crash.
+
+        # This test run the pickle that reproduce this case.
         with open(os.path.join(os.path.dirname(__file__),
                                'test_fg_old_crash.pkl'),
                   'rb') as f: