Remove unused dependency

[bluwy]

Initial checklist

• I read the support docs
• I read the contributing guide
• I agree to follow the code of conduct
• I searched issues and couldn’t find anything (or linked relevant results below)
• If applicable, I’ve added docs and tests

Description of changes

Remove hast-util-raw as it's not used in the published files. It's only used in test/raw.js for ambient types, but I found from https://github.com/syntax-tree/hast-util-raw?tab=readme-ov-file#types and https://github.com/syntax-tree/mdast-util-to-hast?tab=readme-ov-file#types that the types should be sourced from mdast-util-to-hast, so I switched to that instead and hast-util-raw is no longer used anywhere else.

[wooorm]

There wasn’t really a place where “raw” was coming from, so it used to be defined in both places.
That’s now cleaned, as you noticed from the docs, they’re in mdast-util-to-hast.

[wooorm]

9.0.2, thanks!