Remove the LoadLocal used at the end of a temp local scope.

runtime/vm/flow_graph_builder.h

Index: runtime/vm/flow_graph_builder.h
diff --git a/runtime/vm/flow_graph_builder.h b/runtime/vm/flow_graph_builder.h
index 977df17fc5d73d6125be337ddede705796d68107..870773b5d5368b9b7bc96e4f13cfd5684eaad641 100644
--- a/runtime/vm/flow_graph_builder.h
+++ b/runtime/vm/flow_graph_builder.h
@@ -436,8 +436,8 @@ class EffectGraphVisitor : public AstNodeVisitor {
 
   // Helpers for allocating and deallocating temporary locals on top of the
   // expression stack.
-  LocalVariable* EnterTempLocalScope(Value* value, TokenPosition token_pos);
-  Definition* ExitTempLocalScope(LocalVariable* var, TokenPosition token_pos);
+  LocalVariable* EnterTempLocalScope(Value* value);
+  Definition* ExitTempLocalScope(Value* value);
 
   void BuildLetTempExpressions(LetNode* node);