Remove strong mode support from property loads.

src/code-stubs.h

Index: src/code-stubs.h
diff --git a/src/code-stubs.h b/src/code-stubs.h
index 3ba5de64cf8dc01520c21add652a1e807a141c26..039b2e28f0cfd7b5901b4f5fe48da655de76bcb7 100644
--- a/src/code-stubs.h
+++ b/src/code-stubs.h
@@ -2074,10 +2074,6 @@ class LoadDictionaryElementStub : public HydrogenCodeStub {
     return LoadWithVectorDescriptor(isolate());
   }
 
-  LanguageMode language_mode() const {
-    return LoadICState::GetLanguageMode(MinorKey());
-  }
-
   DEFINE_HYDROGEN_CODE_STUB(LoadDictionaryElement, HydrogenCodeStub);
 };
 
@@ -2092,10 +2088,6 @@ class KeyedLoadGenericStub : public HydrogenCodeStub {
   Code::Kind GetCodeKind() const override { return Code::KEYED_LOAD_IC; }
   InlineCacheState GetICState() const override { return GENERIC; }
 
-  LanguageMode language_mode() const {
-    return LoadICState::GetLanguageMode(MinorKey());
-  }
-
   DEFINE_CALL_INTERFACE_DESCRIPTOR(Load);
 
   DEFINE_HYDROGEN_CODE_STUB(KeyedLoadGeneric, HydrogenCodeStub);