refactor(linter): remove unused set_rules method

[camc314]

this method is unused, hence it makes sense to remove.
furthermore, keeping it makes it tricky to work the nested config stuff

[camc314]

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• refactor(linter): remove unused set_rules method #8030 👈 (View in Graphite)
• refactor(linter): remove unused with_rules and set_rule methods #8029
• main

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[codspeed-hq]

CodSpeed Performance Report

Merging #8030 will not alter performance

_{Comparing c/12-19-refactor_linter_remove_unused_set_rules_method (83136ba) with c/12-19-refactor_linter_remove_unused_with_rules_method (3262b86)}

Summary

✅ 29 untouched benchmarks

[camc314]

looks like clippy is stopping me from doing this in two separte PRs 🙂