[turbofan] Disallow typing for change/checked operators.

src/compiler/simplified-operator-reducer.h

Index: src/compiler/simplified-operator-reducer.h
diff --git a/src/compiler/simplified-operator-reducer.h b/src/compiler/simplified-operator-reducer.h
index a7bd62b3d8b307570d7a92aa10b6bc91706d6f29..e42561de022090fae6abafc0b39e0d2868a5af39 100644
--- a/src/compiler/simplified-operator-reducer.h
+++ b/src/compiler/simplified-operator-reducer.h
@@ -9,10 +9,6 @@
 
 namespace v8 {
 namespace internal {
-
-// Forward declarations.
-class TypeCache;
-
 namespace compiler {
 
 // Forward declarations.
@@ -46,7 +42,6 @@ class SimplifiedOperatorReducer final : public AdvancedReducer {
   SimplifiedOperatorBuilder* simplified() const;
 
   JSGraph* const jsgraph_;
-  TypeCache const& type_cache_;
 
   DISALLOW_COPY_AND_ASSIGN(SimplifiedOperatorReducer);
 };