Remove Ruby version checks (#985) #3878

Job	Run time
Debug compatibility test	5m 50s
lint	9s
ruby-versions / Generate Ruby versions	3s
vterm-yamatanooroti 2.7 (latest reline)	1m 2s
rake test 2.7 (latest reline)	1m 27s
vterm-yamatanooroti 2.7	1m 7s
rake test 2.7	1m 29s
vterm-yamatanooroti 3.0 (latest reline)	51s
rake test 3.0 (latest reline)	1m 26s
vterm-yamatanooroti 3.0	50s
rake test 3.0	1m 23s
vterm-yamatanooroti 3.1 (latest reline)	1m 17s
rake test 3.1 (latest reline)	1m 28s
vterm-yamatanooroti 3.1	55s
vterm-yamatanooroti 3.2 (latest reline)	1m 18s
rake test 3.1	1m 29s
vterm-yamatanooroti 3.2	50s
rake test 3.2 (latest reline)	1m 24s
vterm-yamatanooroti 3.3 (latest reline)	1m 0s
rake test 3.2	1m 21s
vterm-yamatanooroti 3.3	58s
rake test 3.3 (latest reline)	1m 25s
vterm-yamatanooroti head (latest reline)	54s
rake test 3.3	1m 26s
vterm-yamatanooroti head	1m 3s
rake test head (latest reline)	1m 37s
rake test head	1m 36s
rake test truffleruby-head (latest reline)	2m 44s
rake test truffleruby-head	2m 41s
	41m 3s

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