fix: Clean up some requires #597

Job	Run time
tests (ubuntu-latest, 2.4, test)	2m 22s
tests (ubuntu-latest, 2.5, test)	2m 17s
tests (ubuntu-latest, 2.6, test)	2m 19s
tests (ubuntu-latest, 2.7, test)	2m 55s
tests (ubuntu-latest, 3.0, test)	1m 47s
tests (ubuntu-latest, 3.1, test)	1m 44s
tests (ubuntu-latest, 3.2, test)	2m 14s
tests (ubuntu-latest, jruby, test)	13m 31s
tests (ubuntu-latest, truffleruby, test)	6m 18s
tests (macos-latest, 2.4, test)	3m 50s
tests (macos-latest, 3.2, test)	3m 16s
tests (windows-latest, 2.4, test)	6m 26s
tests (windows-latest, 3.2, test)	6m 31s
tests (ubuntu-latest, 3.2, rubocop , yardoc , build)	51s
	56m 21s

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