[ic] Remove names table from type feedback metadata.

src/ast/ast.cc

Index: src/ast/ast.cc
diff --git a/src/ast/ast.cc b/src/ast/ast.cc
index fc8bd8a5bd321dd851de67f1b6332b0c6f1fa9dc..d847f5449eecc2c300fdfea382a3ae67eb2332e1 100644
--- a/src/ast/ast.cc
+++ b/src/ast/ast.cc
@@ -211,7 +211,7 @@ void VariableProxy::AssignFeedbackVectorSlots(Isolate* isolate,
             static_cast<int>(reinterpret_cast<intptr_t>(entry->value)));
         return;
       }
-      variable_feedback_slot_ = spec->AddLoadGlobalICSlot(var()->name());
+      variable_feedback_slot_ = spec->AddLoadGlobalICSlot();
       cache->Put(var(), variable_feedback_slot_);
     } else {
       variable_feedback_slot_ = spec->AddLoadICSlot();