Get rid of support for legacy SCMTool method signatures.
Review Request #12032 — Created Feb. 3, 2022 and submitted
SCMTool had a class
__new__which looked for kwargs support in the
normalize_path_for_displaymethod and warned if it wasn't present (and
adapted the method signature with a wrapper). This warned that support
would go away in 5.0, so it's time to remove it.
Ran unit tests.