Bump MSRV to 1.80

src/utils.rs

@@ -1,32 +1,4 @@
-// A poly-fill for `lazy_cell`
-// Replace with std::sync::LazyLock when https://github.com/rust-lang/rust/issues/109736 is stabilized.
-
-// This isn't used on every platform, which can come up as dead code warnings.
-#![allow(dead_code)]
-
 use std::any::Any;
-use std::ops::Deref;
-use std::sync::OnceLock;
-
-pub(crate) struct Lazy<T> {
-    cell: OnceLock<T>,
-    init: fn() -> T,
-}
-
-impl<T> Lazy<T> {
-    pub const fn new(f: fn() -> T) -> Self {
-        Self { cell: OnceLock::new(), init: f }
-    }
-}
-
-impl<T> Deref for Lazy<T> {
-    type Target = T;
-
-    #[inline]
-    fn deref(&self) -> &'_ T {
-        self.cell.get_or_init(self.init)
-    }
-}
 
 // NOTE: This is `pub`, but isn't actually exposed outside the crate.
 // NOTE: Marked as `#[doc(hidden)]` and underscored, because they can be quite difficult to use