Apply suggestions from code review

cphyc · neutrinoceros · web-flow · commit ded6e1c496f9 · 2023-11-27T16:48:44.000+01:00
Co-authored-by: Clément Robert &lt;cr52@protonmail.com&gt;
diff --git a/yt/data_objects/tests/test_time_series.py b/yt/data_objects/tests/test_time_series.py
@@ -66,9 +66,9 @@ def _setup_classes(self):
             return
 
     try:
-        yield __FakeDataset
+        yield _FakeDataset
     finally:
-        output_type_registry.pop("__FakeDataset")
+        output_type_registry.pop("_FakeDataset")
 
 
 @pytest.fixture
