diff --git a/widestring-suffix/Cargo.toml b/widestring-suffix/Cargo.toml
deleted file mode 100644
index 1e7275968..000000000
--- a/widestring-suffix/Cargo.toml
+++ /dev/null
@@ -1,13 +0,0 @@
-[package]
-name = "widestring-suffix"
-version = "0.1.0"
-edition.workspace = true
-rust-version.workspace = true
-
-[lib]
-proc-macro = true
-
-[dependencies]
-syn = { version = "1.0", features = ["full", "visit-mut"] }
-proc-macro2 = "1.0"
-quote = "1.0"
diff --git a/widestring-suffix/src/lib.rs b/widestring-suffix/src/lib.rs
deleted file mode 100644
index af14d928a..000000000
--- a/widestring-suffix/src/lib.rs
+++ /dev/null
@@ -1,51 +0,0 @@
-extern crate proc_macro as pm;
-
-use proc_macro2::{Group, Literal, TokenStream, TokenTree};
-use quote::quote_spanned;
-use syn::{Lit, LitStr};
-
-/// A proc macro which allows easy creation of nul-terminated wide strings.
-/// It replaces strings with an L suffix like so:
-///    "foo"L
-/// with a call like so:
-///     crate::wchar::L!("foo")
-#[proc_macro_attribute]
-pub fn widestrs(_attr: pm::TokenStream, input: pm::TokenStream) -> pm::TokenStream {
-    let s = widen_stream(input.into());
-    s.into()
-}
-
-fn widen_token_tree(tt: TokenTree) -> TokenStream {
-    match tt {
-        TokenTree::Group(group) => {
-            let wide_stream = widen_stream(group.stream());
-            TokenTree::Group(Group::new(group.delimiter(), wide_stream)).into()
-        }
-        TokenTree::Literal(lit) => widen_literal(lit),
-        tt => tt.into(),
-    }
-}
-
-fn widen_stream(input: TokenStream) -> TokenStream {
-    input.into_iter().map(widen_token_tree).collect()
-}
-
-fn try_parse_literal(tt: TokenTree) -> Option<LitStr> {
-    let ts: TokenStream = tt.into();
-    match syn::parse2::<Lit>(ts) {
-        Ok(Lit::Str(lit)) => Some(lit),
-        _ => None,
-    }
-}
-
-fn widen_literal(lit: Literal) -> TokenStream {
-    let tt = TokenTree::Literal(lit);
-    match try_parse_literal(tt.clone()) {
-        Some(lit) if lit.suffix() == "L" => {
-            let value = lit.value();
-            let span = lit.span();
-            quote_spanned!(span=> crate::wchar::L!(#value))
-        }
-        _ => tt.into(),
-    }
-}
diff --git a/widestring-suffix/tests/test.rs b/widestring-suffix/tests/test.rs
deleted file mode 100644
index eb11e1b72..000000000
--- a/widestring-suffix/tests/test.rs
+++ /dev/null
@@ -1,24 +0,0 @@
-use widestring_suffix::widestrs;
-
-mod wchar {
-    macro_rules! L {
-        ($string:expr) => {
-            42
-        };
-    }
-
-    pub(crate) use L;
-}
-
-#[widestrs]
-mod stuff {
-    pub fn test1() {
-        let s = "abc"L;
-        assert_eq!(s, 42);
-    }
-}
-
-#[test]
-fn test_widestring() {
-    stuff::test1();
-}