Remove deprecated 'str' getter on Match.

sdk/lib/core/regexp.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.
 
 part of dart.core;
 
 /**
  * A result from searching within a string.
  *
  * A Match or an [Iterable] of Match objects is returned from [Pattern]
@@ skipping 68 matching lines @@
    * which is also the maximal allowed argument to the [group] method.
    */
   int get groupCount;
 
   /**
    * The string on which this match was computed.
    */
   String get input;
 
   /**
-   * Deprecated alias for [input].
-   *
-   * Will be removed soon.
-   */
-  @deprecated
-  String get str;
-
-  /**
    * The pattern used to search in [input].
    */
   Pattern get pattern;
 }
 
 
 /**
  * A regular expression pattern.
  *
  * Regular expressions are [Pattern]s, and can as such be used to match strings
@@ skipping 65 matching lines @@
 
   /**
    * Whether this regular expression is case sensitive.
    *
    * If the regular expression is not case sensitive, it will match an input
    * letter with a pattern letter even if the two letters are different case
    * versions of the same letter.
    */
   bool get isCaseSensitive;
 }