Remove byebug from dependencies (#454) #1565

Job	Run time
test (truffleruby)	1m 10s
test (head)	51s
test (ruby)	1m 7s
benchmark-default (head)	11m 5s
benchmark-default (ruby)	12m 12s
benchmark-default (truffleruby)	15m 36s
benchmark-ractor (head)	6m 48s
benchmark-run-once	1m 23s
benchmark-graph	58s
benchmark-ractor-only (head)	58s
all-tests	2s
	52m 10s

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