remove similar-names bc it's slow #1670

Job	Run time
tests (ubuntu-latest, unit, 3.8)	49s
tests (ubuntu-latest, unit, 3.12)	46s
tests (ubuntu-latest, integration, 3.8)	2m 23s
tests (ubuntu-latest, integration, 3.12)	3m 4s
tests (ubuntu-latest, tool, 3.8)	48s
tests (ubuntu-latest, tool, 3.12)	53s
tests (windows-2022, unit, 3.8)	4m 5s
tests (windows-2022, unit, 3.12)	1m 47s
tests (windows-2022, integration, 3.8)	3m 9s
tests (windows-2022, integration, 3.12)	3m 9s
tests (windows-2022, tool, 3.8)	3m 59s
tests (windows-2022, tool, 3.12)	3m 49s
coverage	13s
	28m 54s

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