Remove the type token used to pass element information to arrays.

compiler/lib/implementation/array.js

 // 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.
 
-function native_ListFactory__new(typeToken, length) {
-  return RTT.setTypeInfo(
-      new Array(length),
-      Array.$lookupRTT(RTT.getTypeInfo(typeToken).typeArgs));
-}
-
 function native_ListImplementation__indexOperator(index) {
   return this[index];
 }
 
 function native_ListImplementation__indexAssignOperator(index, value) {
   this[index] = value;
 }
 
 function native_ListImplementation_get$length() {
   return this.length;
@@ skipping 18 matching lines @@
   this.splice(start, length);
 }
 
 function native_ListImplementation__insertRange(start, length, initialValue) {
   var array = [start, 0];
   for (var i = 0; i < length; i++){
     array.push(initialValue);
   }
   this.splice.apply(this, array);
 }