It was only used to share two constants, and balloons its dependencies.
This also makes `generate_parser_for_grammar` work in wasm.
(Tested in `wasm32-wasip2` in wasmtime with the json grammar,
`wasm32-unknown-unknown` running in the same setup exited successfully
so I'm pretty confident it works as well)
Co-authored-by: Amaan Qureshi <contact@amaanq.com>