From 44482a529016dd94b8346db23c3203ecd3679908 Mon Sep 17 00:00:00 2001
From: Nicholas Nethercote <n.nethercote@gmail.com>
Date: Sun, 2 Feb 2025 17:35:11 +1100
Subject: [PATCH] Remove unused `ToType` trait.

---
 compiler/rustc_middle/src/infer/unify_key.rs | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/compiler/rustc_middle/src/infer/unify_key.rs b/compiler/rustc_middle/src/infer/unify_key.rs
index 7f9211043d69..faaaa8e9cc66 100644
--- a/compiler/rustc_middle/src/infer/unify_key.rs
+++ b/compiler/rustc_middle/src/infer/unify_key.rs
@@ -5,11 +5,7 @@ use rustc_data_structures::unify::{NoError, UnifyKey, UnifyValue};
 use rustc_span::Span;
 use rustc_span::def_id::DefId;
 
-use crate::ty::{self, Ty, TyCtxt};
-
-pub trait ToType {
-    fn to_type<'tcx>(&self, tcx: TyCtxt<'tcx>) -> Ty<'tcx>;
-}
+use crate::ty;
 
 #[derive(Copy, Clone, Debug)]
 pub enum RegionVariableValue<'tcx> {