docs(transport/cc): remove obsolete comment #5255

Job	Run time
toolchains	4s
Ensure `Cargo.lock` contains all required dependencies	4s
check (ubuntu-latest, 1.76.0, debug)	3m 16s
check (ubuntu-latest, stable, debug)	3m 1s
check (ubuntu-latest, nightly, debug)	5m 10s
check (macos-latest, 1.76.0, debug)	3m 51s
check (macos-latest, stable, debug)	2m 27s
check (macos-latest, nightly, debug)	5m 19s
check (windows-latest, 1.76.0, debug)	7m 4s
check (windows-latest, stable, debug)	6m 13s
check (windows-latest, nightly, debug)	10m 39s
check (ubuntu-latest, stable, release)	5m 36s
bench / Benchmark	24m 30s
	1h 17m 14s

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