MNT Removes pytest.warns(None) in test_validation#23282

lesteve merged 2 commits intoscikit-learn:mainscikit-learn/scikit-learn:mainfrom

thomasjpfan:remove_deprecated_pytest_none_test_validationthomasjpfan/scikit-learn:remove_deprecated_pytest_none_test_validationCopy head branch name to clipboard