chore(dependencies): remove libc crate from dependencies #2462

Job	Run time
Verify hyper.h is up to date	27s
Check Style	11s
semver	12s
Check MSRV	52s
features	38s
Test C API (FFI)	30s
minimal-versions	36s
Test with Miri	54s
Test stable on ubuntu-latest	1m 10s
udeps	27s
Test stable on windows-latest	2m 14s
Test stable on macOS-latest	3m 32s
Test beta on ubuntu-latest	1m 16s
Test beta on windows-latest	2m 13s
Test beta on macOS-latest	1m 38s
Test nightly on ubuntu-latest	1m 18s
Test nightly on windows-latest	2m 11s
Test nightly on macOS-latest	2m 5s
Build docs	18s
Check exposed types	18s
CI is green	1s
	23m 1s

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