Remove deprecated mappedBy.

sdk/lib/core/iterable.dart

 // 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.
 
 part of dart.core;
 
 /**
  * The [Iterable] interface allows to get an [Iterator] out of an
  * [Iterable] object.
  *
@@ skipping 33 matching lines @@
    *
    * This method returns a view of the mapped elements. As long as the
    * returned [Iterable] is not iterated over, the supplied function [f] will
    * not be invoked. The transformed elements will not be cached. Iterating
    * multiple times over the the returned [Iterable] will invoke the supplied
    * function [f] multiple times on the same element.
    */
   Iterable map(f(E element)) => new MappedIterable<E, dynamic>(this, f);
 
   /**
-   * Deprecated alias for [map].
-   */
-  @deprecated
-  Iterable mappedBy(f(E element)) => map(f);
-
-  /**
    * Returns a lazy [Iterable] with all elements that satisfy the
    * predicate [f].
    *
    * This method returns a view of the mapped elements. As long as the
    * returned [Iterable] is not iterated over, the supplied function [f] will
    * not be invoked. Iterating will not cache results, and thus iterating
    * multiple times over the the returned [Iterable] will invoke the supplied
    * function [f] multiple times on the same element.
    */
   Iterable<E> where(bool f(E element)) => new WhereIterable<E>(this, f);
@@ skipping 368 matching lines @@
  */
 abstract class BiDirectionalIterator<T> extends Iterator<T> {
   /**
    * Move back to the previous element.
    *
    * Returns true and updates [current] if successful. Returns false
    * and sets [current] to null if there is no previous element.
    */
   bool movePrevious();
 }