Remove Ruby version checks #3875

Job	Run time
Debug compatibility test	5m 57s
lint	9s
ruby-versions / Generate Ruby versions	3s
vterm-yamatanooroti 2.7 (latest reline)	1m 28s
rake test 2.7 (latest reline)	1m 29s
vterm-yamatanooroti 2.7	2m 6s
rake test 2.7	1m 31s
vterm-yamatanooroti 3.0 (latest reline)	1m 33s
rake test 3.0 (latest reline)	1m 24s
vterm-yamatanooroti 3.0	51s
rake test 3.0	1m 29s
vterm-yamatanooroti 3.1 (latest reline)	1m 2s
rake test 3.1 (latest reline)	1m 31s
vterm-yamatanooroti 3.1	52s
rake test 3.1	1m 26s
vterm-yamatanooroti 3.2 (latest reline)	53s
rake test 3.2 (latest reline)	1m 26s
vterm-yamatanooroti 3.2	54s
rake test 3.2	1m 28s
vterm-yamatanooroti 3.3 (latest reline)	1m 20s
rake test 3.3 (latest reline)	1m 26s
vterm-yamatanooroti 3.3	1m 19s
rake test 3.3	1m 31s
vterm-yamatanooroti head (latest reline)	57s
rake test head (latest reline)	1m 39s
vterm-yamatanooroti head	57s
rake test head	1m 38s
rake test truffleruby-head (latest reline)	2m 41s
rake test truffleruby-head	2m 46s
	43m 46s

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