chore(dependencies): remove libc crate from dependencies #2893

Job	Run time
Check Style	6s
semver	20s
Verify hyper.h is up to date	24s
Check MSRV	23s
features	37s
Test with Miri	2m 28s
minimal-versions	24s
Test stable on ubuntu-latest	1m 19s
Test C API (FFI)	13s
Test stable on windows-latest	3m 11s
udeps	18s
Test stable on macOS-latest	1m 30s
Test beta on ubuntu-latest	1m 7s
Test beta on windows-latest	2m 3s
Test beta on macOS-latest	1m 4s
Test nightly on ubuntu-latest	1m 8s
Test nightly on windows-latest	2m 27s
Test nightly on macOS-latest	1m 15s
Build docs	13s
Check exposed types	25s
CI is green	1s
	20m 56s

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