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Revert "Fix included modules on Ruby 3.4" #260

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Job	Run time
Ruby head	20s
Ruby 3.4	1m 3s
Ruby 3.3	1m 10s
Ruby 3.2	58s
Ruby 3.1	1m 0s
Ruby 3.0	59s
Ruby 2.7	1m 10s
Ruby 2.6	1m 5s
Ruby jruby-head	1m 23s
	9m 8s