tests

Delete unused file #27

Job	Run time
collateral (diffcov)	5m 2s
test_cygwin (39, windows-latest)	12m 59s
collateral (docs)	1m 51s
test (3.8, ubuntu-latest)	2m 18s
test (3.8, windows-latest)	2m 4s
test (3.12, ubuntu-latest)	2m 34s
test (3.12, macos-latest)	3m 1s
test (3.12, windows-latest)	2m 14s
test (3.9, ubuntu-latest)	2m 14s
test (3.10, ubuntu-latest)	3m 50s
test (3.11, ubuntu-latest)	3m 33s
test (pypy3.10, ubuntu-latest, stdlib)	2m 16s
test (ubuntu-latest, 3.10, stdlib)	2m 15s
test (3.8, macos-13)	2m 25s
integration-test	0s
check	2s
release	0s
	48m 38s

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