[es2015] Remove the @@hasInstance protector cell.

src/isolate.h

Index: src/isolate.h
diff --git a/src/isolate.h b/src/isolate.h
index 489bf2c9df77536df1be12f67e2255fda952e044..c783b72f411ceb71b83cd0317362a378d2ed0985 100644
--- a/src/isolate.h
+++ b/src/isolate.h
@@ -996,7 +996,6 @@ class Isolate {
 
   bool IsFastArrayConstructorPrototypeChainIntact();
   inline bool IsArraySpeciesLookupChainIntact();
-  inline bool IsHasInstanceLookupChainIntact();
   bool IsIsConcatSpreadableLookupChainIntact();
   bool IsIsConcatSpreadableLookupChainIntact(JSReceiver* receiver);
   inline bool IsStringLengthOverflowIntact();
@@ -1023,7 +1022,6 @@ class Isolate {
     UpdateArrayProtectorOnSetElement(object);
   }
   void InvalidateArraySpeciesProtector();
-  void InvalidateHasInstanceProtector();
   void InvalidateIsConcatSpreadableProtector();
   void InvalidateStringLengthOverflowProtector();
   void InvalidateArrayIteratorProtector();