Remove deprecated functions #13256

Job	Run time
doctest (1.9, ubuntu-latest)	22m 3s
test (1.6, short, ubuntu-latest)	54m 6s
doctest (1.10, ubuntu-latest)	24m 50s
test (1.6, long, ubuntu-latest)	43m 17s
doctest (nightly, ubuntu-latest)	23m 11s
test (1.9, short, ubuntu-latest)	48m 34s
doctest (1.10, ubuntu-latest, depwarn=error)	23m 8s
test (1.9, long, ubuntu-latest)	39m 18s
doctest (1.10, macOS-14)	14m 58s
test (1.10, short, ubuntu-latest)	39m 32s
test (1.10, long, ubuntu-latest)	36m 25s
test (nightly, short, ubuntu-latest)	47m 1s
test (nightly, long, ubuntu-latest)	43m 44s
test (1.10, short, ubuntu-latest, depwarn=error)	38m 11s
test (1.10, long, ubuntu-latest, depwarn=error)	36m 2s
test (1.10, short, macOS-14)	41m 8s
test (1.10, long, macOS-latest)	1h 0m 36s
	10h 36m 4s

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