Remove duplicated comment in 'test_can_read_env_variable'

Author: Pierre-Sassoulas

tests/config/test_config.py

@@ -100,8 +100,6 @@ def test_can_read_toml_rich_types(tmp_path: PosixPath) -> None:
 
 
 def test_can_read_env_variable(tmp_path: PosixPath) -> None:
-    # Check that we can read the "regular" INI .pylintrc file
-    # if it has an environment variable.
     config_file = tmp_path / "pyproject.toml"
     config_file.write_text(
         """