Revert of [builtins] implement Array.prototype.includes in TurboFan

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index 9ac35fd1cf743c6dffe136c245ef7e8cff82b710..a7795a6c37238d4c2662a9e80a2ab890342c2b70 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -1142,20 +1142,6 @@
   return KeyAccumulator::GetKeys(object, KeyCollectionMode::kOwnOnly,
                                  ALL_PROPERTIES,
                                  GetKeysConversion::kConvertToString);
-}
-
-bool JSObject::PrototypeHasNoElements(Isolate* isolate, JSObject* object) {
-  DisallowHeapAllocation no_gc;
-  HeapObject* prototype = HeapObject::cast(object->map()->prototype());
-  HeapObject* null = isolate->heap()->null_value();
-  HeapObject* empty = isolate->heap()->empty_fixed_array();
-  while (prototype != null) {
-    Map* map = prototype->map();
-    if (map->instance_type() <= LAST_CUSTOM_ELEMENTS_RECEIVER) return false;
-    if (JSObject::cast(prototype)->elements() != empty) return false;
-    prototype = HeapObject::cast(map->prototype());
-  }
-  return true;
 }
 
 #define FIELD_ADDR(p, offset) \