fix: Clean up some requires #599

Job	Run time
tests (ubuntu-latest, 2.4, test)	2m 3s
tests (ubuntu-latest, 2.5, test)	2m 34s
tests (ubuntu-latest, 2.6, test)	2m 8s
tests (ubuntu-latest, 2.7, test)	2m 33s
tests (ubuntu-latest, 3.0, test)	1m 49s
tests (ubuntu-latest, 3.1, test)	2m 9s
tests (ubuntu-latest, 3.2, test)	2m 14s
tests (ubuntu-latest, jruby, test)	11m 48s
tests (ubuntu-latest, truffleruby, test)	6m 2s
tests (macos-latest, 2.4, test)	4m 8s
tests (macos-latest, 3.2, test)	3m 11s
tests (windows-latest, 2.4, test)	6m 12s
tests (windows-latest, 3.2, test)	7m 10s
tests (ubuntu-latest, 3.2, rubocop , yardoc , build)	59s
	55m 0s

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