Remove "sys isn't exported yet" phrase The oldest occurence is from 9e224c2bf18ebf8f871efb2e1aba43ed7970ebb7, which is from the pre-1.0 days. In the years since then, std::sys still hasn't been exported, and the last attempt was met with strong criticism: https://github.com/rust-lang/rust/pull/97151 Thus, removing the "yet" part makes a lot of sense.