gh-92417: `importlib` docs: remove references to unsupported Python versions (GH-92424) (GH-92979)

Co-authored-by: CAM Gerlach <CAM.Gerlach@Gerlach.CAM>
(cherry picked from commit 70aa1b9b912d8254df3c61ae0a55464962f4c087)

Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
2 files changed