Clean unused CI features #2657

Job	Run time
minimal	11s
msrv	52s
docs	25s
check-cfg	26s
rustfmt-clippy	28s
test-book	8s
quickchecking	26s
test (ubuntu-latest, 9.0, 0, 0, 0)	1m 39s
test (ubuntu-latest, 9.0, 0, 0, 1)	1m 46s
test-expectations (ubuntu-latest)	45s
test (ubuntu-latest, 9.0, 0, 1, 0)	1m 47s
test-expectations (macos-latest)	49s
test (ubuntu-latest, 9.0, 0, 1, 1)	1m 47s
test (ubuntu-latest, 9.0, 1, 0, 0)	2m 22s
test (ubuntu-latest, 9.0, 1, 0, 1)	2m 10s
test (ubuntu-latest, 9.0, 1, 1, 0)	2m 55s
test (ubuntu-latest, 9.0, 1, 1, 1)	2m 10s
test (ubuntu-latest, 16.0, 0, 0, 0)	53m 25s
test (ubuntu-latest, 16.0, 0, 0, 1)	53m 52s
test (ubuntu-latest, 16.0, 0, 1, 0)	54m 0s
test (ubuntu-latest, 16.0, 0, 1, 1)	53m 59s
test (ubuntu-latest, 16.0, 1, 0, 0)	5m 46s
test (ubuntu-latest, 16.0, 1, 0, 1)	5m 54s
test (ubuntu-latest, 16.0, 1, 1, 0)	8m 43s
test (ubuntu-latest, 16.0, 1, 1, 1)	4m 40s
test (macos-latest, 16.0, 0, 0)	2m 28s
success	1s
	4h 23m 54s

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