Update tests/css/test_nested_css.py

Author: darrenburns

tests/css/test_nested_css.py

@@ -70,7 +70,6 @@ async def test_lists_of_selectors_in_nested_css() -> None:
 
 
 class DeclarationAfterNestedApp(App[None]):
-    # css = "Screen{Label{background:red;}background:green;}"
     CSS = """
     Screen {
         Label {