Remove ClassElementImpl.withClauseRange.

pkg/analyzer/lib/src/dart/element/element.dart

 // Copyright (c) 2014, 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.
 
 library analyzer.src.dart.element.element;
 
 import 'dart:collection';
 import 'dart:math' show min;
 
 import 'package:analyzer/dart/ast/ast.dart';
@@ skipping 96 matching lines @@
    * The type defined by the class.
    */
   InterfaceType type;
 
   /**
    * A list containing all of the type parameters defined for this class.
    */
   List<TypeParameterElement> _typeParameters = TypeParameterElement.EMPTY_LIST;
 
   /**
-   * The [SourceRange] of the `with` clause, `null` if there is no one.
-   */
-  SourceRange withClauseRange;
-
-  /**
    * A flag indicating whether the types associated with the instance members of
    * this class have been inferred.
    */
   bool hasBeenInferred = false;
 
   /**
    * Initialize a newly created class element to have the given [name] at the
    * given [offset] in the file that contains the declaration of this element.
    */
   ClassElementImpl(String name, int offset) : super(name, offset);
@@ skipping 4659 matching lines @@
 
   @override
   void visitElement(Element element) {
     int offset = element.nameOffset;
     if (offset != -1) {
       map[offset] = element;
     }
     super.visitElement(element);
   }
 }