Test

🔥 Remove old package stub slim, not used nor needed (#1987) #3835

Job	Run time
test (ubuntu-latest, 3.13, highest)	28s
test (windows-latest, 3.12, lowest-direct)	1m 43s
test (ubuntu-latest, 3.10, lowest-direct)	24s
test (macos-latest, 3.11, highest)	25s
test (macos-latest, 3.14, highest)	29s
test (windows-latest, 3.14, highest)	1m 4s
test (macos-latest, 3.13, highest)	22s
test (ubuntu-latest, 3.14, highest)	27s
coverage-combine	15s
alls-green	4s
	5m 41s

Provide feedback