refactor(common): remove common re-export #2200

Job	Run time
Verify hyper.h is up to date	1m 3s
Check Style	15s
Test with Miri	1m 16s
features	36s
Check MSRV	4m 10s
Test C API (FFI)	1m 12s
udeps	29s
Test stable on ubuntu-latest	2m 5s
Test stable on windows-latest	4m 46s
Test stable on macOS-latest	1m 47s
Test beta on ubuntu-latest	1m 58s
Test beta on windows-latest	3m 34s
Test beta on macOS-latest	1m 56s
Test nightly on ubuntu-latest	2m 2s
Test nightly on windows-latest	4m 22s
Test nightly on macOS-latest	2m 31s
Check exposed types	29s
Build docs	31s
CI is green	1s
	35m 3s

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