Uplift TypeError

compiler/rustc_middle/src/ty/mod.rs

@@ -313,38 +313,6 @@ impl Visibility {
     }
 }
 
-#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash, HashStable, TyEncodable, TyDecodable)]
-pub enum BoundConstness {
-    /// `Type: Trait`
-    NotConst,
-    /// `Type: const Trait`
-    Const,
-    /// `Type: ~const Trait`
-    ///
-    /// Requires resolving to const only when we are in a const context.
-    ConstIfConst,
-}
-
-impl BoundConstness {
-    pub fn as_str(self) -> &'static str {
-        match self {
-            Self::NotConst => "",
-            Self::Const => "const",
-            Self::ConstIfConst => "~const",
-        }
-    }
-}
-
-impl fmt::Display for BoundConstness {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        match self {
-            Self::NotConst => f.write_str("normal"),
-            Self::Const => f.write_str("const"),
-            Self::ConstIfConst => f.write_str("~const"),
-        }
-    }
-}
-
 #[derive(Clone, Debug, PartialEq, Eq, Copy, Hash, TyEncodable, TyDecodable, HashStable)]
 #[derive(TypeFoldable, TypeVisitable)]
 pub struct ClosureSizeProfileData<'tcx> {