Removes unused 'normalized' field in many AST nodes.

compiler/java/com/google/dart/compiler/ast/DartForInStatement.java

 // Copyright (c) 2011, 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.
 
 package com.google.dart.compiler.ast;
 
 /**
  * Represents a Dart 'for (.. in ..)' statement.
  */
 public class DartForInStatement extends DartStatement {
 
   private DartStatement setup;
   private DartExpression iterable;
   private DartStatement body;
 
-  private DartStatement normalizedNode = this;
-
   public DartForInStatement(DartStatement setup,
                             DartExpression iterable,
                             DartStatement body) {
     this.setup = becomeParentOf(setup);
     this.iterable = becomeParentOf(iterable);
     this.body = becomeParentOf(body);
   }
 
   public DartStatement getBody() {
     return body;
   }
 
   public DartExpression getIterable() {
     return iterable;
   }
 
-  public void setNormalizedNode(DartStatement statement) {
-    normalizedNode = statement;
-  }
-
-  @Override
-  public DartStatement getNormalizedNode() {
-    return normalizedNode;
-  }
-
   public boolean introducesVariable() {
     return setup instanceof DartVariableStatement;
   }
 
   public DartIdentifier getIdentifier() {
     assert !introducesVariable();
     return (DartIdentifier) ((DartExprStmt) setup).getExpression();
   }
 
   public DartVariableStatement getVariableStatement() {
@@ skipping 16 matching lines @@
     setup.accept(visitor);
     iterable.accept(visitor);
     body.accept(visitor);
   }
 
   @Override
   public <R> R accept(DartPlainVisitor<R> visitor) {
     return visitor.visitForInStatement(this);
   }
 }