remove dependency on winnow

src/main.rs

@@ -8,7 +8,6 @@ use crate::syntax::check::check;
 
 mod lexer;
 mod syntax;
-mod utils;
 
 fn main() {
     let mut files = SimpleFiles::new();

src/utils.rs

@@ -1,13 +0,0 @@
-use winnow::ascii::space0;
-// from https://docs.rs/winnow/latest/winnow/_topic/language/index.html#whitespace
-use winnow::prelude::*;
-use winnow::{ascii::multispace0, combinator::delimited, error::ParserError};
-
-/// A combinator that takes a parser `inner` and produces a parser that also consumes both leading and
-/// trailing whitespace, returning the output of `inner`.
-pub fn ws<'a, F, O, E: ParserError<&'a str>>(inner: F) -> impl Parser<&'a str, O, E>
-where
-    F: Parser<&'a str, O, E>,
-{
-    delimited(space0, inner, space0)
-}