Stop using the Hashable interface.

pkg/dartdoc/lib/mirrors.dart

 // 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.
 
 #library('mirrors');
 
 #import('dart:io');
 #import('dart:uri');
 
 // TODO(rnystrom): Use "package:" URL (#4968).
@@ skipping 44 matching lines @@
   /**
    * Returns an unmodifiable map of all libraries in this mirror system.
    */
   Map<Object, LibraryMirror> get libraries;
 }
 
 
 /**
  * An entity in the mirror system.
  */
-abstract class Mirror implements Hashable {
+abstract class Mirror {
   /**
    * The simple name of the entity. The simple name is in most cases the
    * the declared single identifier name of the entity, such as 'method' for
    * a method [:void method() {...}:].
    */
   String get simpleName;
 
   /**
    * Returns the name of this entity qualified by is enclosing context. For
    * instance, the qualified name of a method 'method' in class 'Class' in
@@ skipping 385 matching lines @@
   /**
    * Returns the URI where the source originated.
    */
   Uri get uri;
 
   /**
    * Returns the text of this source.
    */
   String get text;
 }