Clean up some C APIs #134

Job	Run time
Build wheels on Linux for auto	1m 37s
Build wheels on macos-latest	24s
Build wheels on Linux for aarch64	2m 17s
Build wheels on macos-latest	24s
Build wheels on Linux for auto	1m 42s
Build wheels on macos-latest	24s
Build wheels on Linux for aarch64	2m 22s
Build wheels on macos-13	1m 12s
Build wheels on Linux for auto	1m 35s
Build wheels on macos-13	1m 2s
Build wheels on Linux for aarch64	2m 20s
Build wheels on macos-13	1m 2s
Build wheels on Linux for auto	1m 44s
Build wheels on macos-13	39s
Build wheels on Linux for aarch64	2m 18s
Build wheels on macos-13	59s
Build wheels on Linux for auto	1m 42s
Build wheels on windows-latest	3m 9s
Build wheels on Linux for aarch64	2m 20s
Build wheels on windows-latest	3m 7s
Build wheels on windows-latest	3m 45s
Build wheels on windows-latest	3m 9s
Build wheels on windows-latest	3m 32s
	42m 45s

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