Remove strong mode support from property loads.

src/accessors.cc

Index: src/accessors.cc
diff --git a/src/accessors.cc b/src/accessors.cc
index 1ab7fdd2522c73a1c5e7788b418ee9a4adecf264..c7e1d619373bb5d760c6da3cdd4ad71782cd27bc 100644
--- a/src/accessors.cc
+++ b/src/accessors.cc
@@ -142,8 +142,7 @@ MUST_USE_RESULT static MaybeHandle<Object> ReplaceAccessorWithDataProperty(
   Handle<Object> old_value;
   bool is_observed = observe && receiver->map()->is_observed();
   if (is_observed) {
-    MaybeHandle<Object> maybe_old =
-        Object::GetPropertyWithAccessor(&it, SLOPPY);
+    MaybeHandle<Object> maybe_old = Object::GetPropertyWithAccessor(&it);
     if (!maybe_old.ToHandle(&old_value)) return maybe_old;
   }