Remove unused Constructor: PartialEq impl

Author: Nadrieril

compiler/rustc_pattern_analysis/src/constructor.rs

@@ -151,7 +151,6 @@
 use std::cmp::{self, max, min, Ordering};
 use std::fmt;
 use std::iter::once;
-use std::mem;
 
 use smallvec::SmallVec;
 
@@ -745,47 +744,6 @@ impl<Cx: TypeCx> fmt::Debug for Constructor<Cx> {
     }
 }
 
-impl<Cx: TypeCx> PartialEq for Constructor<Cx> {
-    fn eq(&self, other: &Self) -> bool {
-        (mem::discriminant(self) == mem::discriminant(other))
-            && match (self, other) {
-                (Constructor::Struct, Constructor::Struct) => true,
-                (Constructor::Variant(self_variant), Constructor::Variant(other_variant)) => {
-                    self_variant == other_variant
-                }
-                (Constructor::Ref, Constructor::Ref) => true,
-                (Constructor::Slice(self_slice), Constructor::Slice(other_slice)) => {
-                    self_slice == other_slice
-                }
-                (Constructor::UnionField, Constructor::UnionField) => true,
-                (Constructor::Bool(self_b), Constructor::Bool(other_b)) => self_b == other_b,
-                (Constructor::IntRange(self_range), Constructor::IntRange(other_range)) => {
-                    self_range == other_range
-                }
-                (
-                    Constructor::F32Range(self_lo, self_hi, self_end),
-                    Constructor::F32Range(other_lo, other_hi, other_end),
-                ) => self_lo == other_lo && self_hi == other_hi && self_end == other_end,
-                (
-                    Constructor::F64Range(self_lo, self_hi, self_end),
-                    Constructor::F64Range(other_lo, other_hi, other_end),
-                ) => self_lo == other_lo && self_hi == other_hi && self_end == other_end,
-                (Constructor::Str(self_value), Constructor::Str(other_value)) => {
-                    self_value == other_value
-                }
-                (Constructor::Opaque(self_inner), Constructor::Opaque(other_inner)) => {
-                    self_inner == other_inner
-                }
-                (Constructor::Or, Constructor::Or) => true,
-                (Constructor::Wildcard, Constructor::Wildcard) => true,
-                (Constructor::NonExhaustive, Constructor::NonExhaustive) => true,
-                (Constructor::Hidden, Constructor::Hidden) => true,
-                (Constructor::Missing, Constructor::Missing) => true,
-                _ => unreachable!(),
-            }
-    }
-}
-
 impl<Cx: TypeCx> Constructor<Cx> {
     pub(crate) fn is_non_exhaustive(&self) -> bool {
         matches!(self, NonExhaustive)