Kill some dead code: classic frame element and const lists.

src/isolate.h

Index: src/isolate.h
diff --git a/src/isolate.h b/src/isolate.h
index 0d36b3f795c506b2ac1c1f0ab24e1ffbb1df6455..28bc44b1705df27f077ec70363952f691248fe59 100644
--- a/src/isolate.h
+++ b/src/isolate.h
@@ -895,14 +895,6 @@ class Isolate {
     return &interp_canonicalize_mapping_;
   }
 
-  ZoneObjectList* frame_element_constant_list() {
-    return &frame_element_constant_list_;
-  }
-
-  ZoneObjectList* result_constant_list() {
-    return &result_constant_list_;
-  }
-
   void* PreallocatedStorageNew(size_t size);
   void PreallocatedStorageDelete(void* p);
   void PreallocatedStorageInit(size_t size);
@@ -1157,8 +1149,6 @@ class Isolate {
       regexp_macro_assembler_canonicalize_;
   RegExpStack* regexp_stack_;
   unibrow::Mapping<unibrow::Ecma262Canonicalize> interp_canonicalize_mapping_;
-  ZoneObjectList frame_element_constant_list_;
-  ZoneObjectList result_constant_list_;
   void* embedder_data_;
 
 #if defined(V8_TARGET_ARCH_ARM) && !defined(__arm__) || \