Remove outdated test

The test applies to things that have a `reports_` attribute,
but in reality the only things `progress_decorator` applies to are
skore.*Report and their associated Accessors.

Author: auguste-probabl

skore/tests/unit/utils/test_progress_bar.py

@@ -125,41 +125,3 @@ def run(self):
 
     # Verify progress bar was cleaned up
     assert task._progress_info is None
-
-
-def test_child_report_cleanup():
-    """Ensure that child reports in reports_ get progress assigned and then cleaned
-    up."""
-
-    class Child:
-        def __init__(self):
-            self._progress_info = None
-            self.called = False
-
-        @progress_decorator("Child Process")
-        def process(self):
-            self.called = True
-            return "child_done"
-
-    class Parent:
-        def __init__(self):
-            self._progress_info = None
-            self.reports_ = {"child1": Child(), "child2": Child()}
-
-        @progress_decorator("Parent Process")
-        def run(self):
-            results = []
-            for rpt in self.reports_.values():
-                results.append(rpt.process())
-            return results
-
-    parent = Parent()
-    results = parent.run()
-
-    assert results == ["child_done", "child_done"]
-    assert all(rp.called for rp in parent.reports_.values())
-    # Verify that progress attributes are cleaned for each child report
-    for rp in parent.reports_.values():
-        assert rp._progress_info is None
-    # Also verify if parent reports are cleaned up as well
-    assert parent._progress_info is None