test

Refactor `report_unused_terms` #437

Job	Run time
test-memory (head)	27s
check-misc (head)	8s
test-ruby (head, master)	5m 38s
test-windows (head)	1m 59s
steep-check (head)	14s
test-ruby (3.0, master)	5m 38s
ruby-versions / Generate Ruby versions	3s
test (2.5)	24s
test (2.6)	24s
test (2.7)	22s
test (3.0)	12s
test (3.1)	13s
test (3.2)	14s
test (3.3)	10s
test (head)	12s
	16m 18s

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