chore: remove useless Hash impl

src/ty/internal/cnst.rs

@@ -107,16 +107,3 @@ impl PartialEq for Const {
 }
 
 impl Eq for Const {}
-
-/* impl Hash for Const {
-    fn hash<H: Hasher>(&self, state: &mut H) {
-        use Const::*;
-        match self {
-            Bool(b) => b.hash(state),
-            Int(int) => int.hash(state),
-            Float(float) => float.to_bits().hash(state),
-            String(string) => string.hash(state),
-            Func(func) => func.hash(state),
-        }
-    }
-} */

src/ty/internal/mod.rs

@@ -27,7 +27,7 @@ pub trait ToPublic {
     fn to_public(self, vm: &VM) -> p::Value;
 }
 
-#[derive(Debug, PartialEq, Eq, Hash, Clone, Copy, Constructor)]
+#[derive(Debug, PartialEq, Eq, Clone, Copy, Constructor)]
 pub struct Thunk(usize);
 
 #[derive(Debug, IsVariant, Unwrap, Clone, PartialEq)]

src/ty/public/cnst.rs

@@ -1,5 +1,3 @@
-use std::hash::{Hash, Hasher};
-
 use anyhow::Error;
 use derive_more::{IsVariant, Unwrap};
 use ecow::EcoString;
@@ -121,16 +119,3 @@ impl PartialEq for Const {
 }
 
 impl Eq for Const {}
-
-impl Hash for Const {
-    fn hash<H: Hasher>(&self, state: &mut H) {
-        use Const::*;
-        match self {
-            Bool(b) => b.hash(state),
-            Int(int) => int.hash(state),
-            Float(float) => float.to_bits().hash(state),
-            String(string) => string.hash(state),
-            func @ Func => func.hash(state),
-        }
-    }
-}