[turbofan] Remove unused Type parameter from ReferenceEqual.

src/compiler/simplified-operator.cc

Index: src/compiler/simplified-operator.cc
diff --git a/src/compiler/simplified-operator.cc b/src/compiler/simplified-operator.cc
index 623f229c85a2b9ab7ca55a2d743f6809ec56f7ee..f2649994870cb844fba63f2d06d77c4430237e3a 100644
--- a/src/compiler/simplified-operator.cc
+++ b/src/compiler/simplified-operator.cc
@@ -426,6 +426,7 @@ NumberOperationHint NumberOperationHintOf(const Operator* op) {
   V(ObjectIsSmi, Operator::kNoProperties, 1, 0)               \
   V(ObjectIsString, Operator::kNoProperties, 1, 0)            \
   V(ObjectIsUndetectable, Operator::kNoProperties, 1, 0)      \
+  V(ReferenceEqual, Operator::kCommutative, 2, 0)             \
   V(StringEqual, Operator::kCommutative, 2, 0)                \
   V(StringLessThan, Operator::kNoProperties, 2, 0)            \
   V(StringLessThanOrEqual, Operator::kNoProperties, 2, 0)
@@ -717,12 +718,6 @@ const Operator* SimplifiedOperatorBuilder::CheckTaggedHole(
   return nullptr;
 }
 
-const Operator* SimplifiedOperatorBuilder::ReferenceEqual(Type* type) {
-  return new (zone()) Operator(IrOpcode::kReferenceEqual,
-                               Operator::kCommutative | Operator::kPure,
-                               "ReferenceEqual", 2, 0, 0, 1, 0, 0);
-}
-
 const Operator* SimplifiedOperatorBuilder::EnsureWritableFastElements() {
   return &cache_.kEnsureWritableFastElements;
 }