Remove an unused input operand from ExtractConstructorInstantiator.

vm/il_printer.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/il_printer.h"
 
 #include "vm/intermediate_language.h"
 #include "vm/os.h"
 
 namespace dart {
@@ skipping 279 matching lines @@
   OS::Print("ExtractConstructorTypeArguments(%s, ", type_args.ToCString());
   comp->instantiator()->Accept(this);
   OS::Print(")");
 }
 
 
 void FlowGraphPrinter::VisitExtractConstructorInstantiator(
     ExtractConstructorInstantiatorComp* comp) {
   OS::Print("ExtractConstructorInstantiator(");
   comp->instantiator()->Accept(this);
-  OS::Print(", ");
-  comp->discard_value()->Accept(this);
   OS::Print(")");
 }
 
 
 void FlowGraphPrinter::VisitAllocateContext(AllocateContextComp* comp) {
   OS::Print("AllocateContext(%d)", comp->num_context_variables());
 }
 
 
 void FlowGraphPrinter::VisitChainContext(ChainContextComp* comp) {
@@ skipping 80 matching lines @@
 void FlowGraphPrinter::VisitBranch(BranchInstr* instr) {
   OS::Print("    if ");
   instr->value()->Accept(this);
   OS::Print(" goto (%d, %d)",
             reverse_index(instr->true_successor()->postorder_number()),
             reverse_index(instr->false_successor()->postorder_number()));
 }
 
 
 }  // namespace dart