[ic] Delete old KeyedLoadIC code

src/assembler.h

Index: src/assembler.h
diff --git a/src/assembler.h b/src/assembler.h
index a925032e2d72bb86995ea1d798f687c403f50019..9f8de8db85d8d4921c1548061459e8d91f2773a0 100644
--- a/src/assembler.h
+++ b/src/assembler.h
@@ -950,10 +950,6 @@ class ExternalReference BASE_EMBEDDED {
   static ExternalReference log_enter_external_function(Isolate* isolate);
   static ExternalReference log_leave_external_function(Isolate* isolate);
 
-  // Static data in the keyed lookup cache.
-  static ExternalReference keyed_lookup_cache_keys(Isolate* isolate);
-  static ExternalReference keyed_lookup_cache_field_offsets(Isolate* isolate);
-
   // Static variable Heap::roots_array_start()
   static ExternalReference roots_array_start(Isolate* isolate);