1 files changed, 0 insertions, 66 deletions

diff --git a/crates/ra_hir/src/arena.rs b/crates/ra_hir/src/arena.rs
deleted file mode 100644
index d4f9d9cb9..000000000
--- a/crates/ra_hir/src/arena.rs
+++ /dev/null
@@ -1,66 +0,0 @@
-//! A simple id-based arena, similar to https://github.com/fitzgen/id-arena.
-//! We use our own version for more compact id's and to allow inherent impls
-//! on Ids.
-
-use std::{
-    fmt,
-    hash::{Hash, Hasher},
-    marker::PhantomData,
-};
-
-pub struct Id<T> {
-    idx: u32,
-    _ty: PhantomData<fn() -> T>,
-}
-
-impl<T> fmt::Debug for Id<T> {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        f.debug_tuple("Id").field(&self.idx).finish()
-    }
-}
-impl<T> Copy for Id<T> {}
-impl<T> Clone for Id<T> {
-    fn clone(&self) -> Id<T> {
-        *self
-    }
-}
-
-impl<T> PartialEq for Id<T> {
-    fn eq(&self, other: &Id<T>) -> bool {
-        self.idx == other.idx
-    }
-}
-
-impl<T> Eq for Id<T> {}
-
-impl<T> Hash for Id<T> {
-    fn hash<H: Hasher>(&self, h: &mut H) {
-        self.idx.hash(h);
-    }
-}
-
-#[derive(Debug, PartialEq, Eq)]
-pub(crate) struct ArenaBehavior<T> {
-    _ty: PhantomData<T>,
-}
-
-impl<T> id_arena::ArenaBehavior for ArenaBehavior<T> {
-    type Id = Id<T>;
-    fn new_arena_id() -> u32 {
-        0
-    }
-    fn new_id(_arena_id: u32, index: usize) -> Id<T> {
-        Id {
-            idx: index as u32,
-            _ty: PhantomData,
-        }
-    }
-    fn index(id: Id<T>) -> usize {
-        id.idx as usize
-    }
-    fn arena_id(_id: Id<T>) -> u32 {
-        0
-    }
-}
-
-pub(crate) type Arena<T> = id_arena::Arena<T, ArenaBehavior<T>>;