Remove "function" in front of function. This is not JS!

tests/corelib/date_time_test.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.
 
 import "package:expect/expect.dart";
 
 // Dart test program for DateTime.
 
 // Tests if the time moves eventually forward.
 void testNow() {
@@ skipping 792 matching lines @@
   Expect.equals(DateTime.MONDAY, d.weekday);
   d = new DateTime(2011, 10, 2, 23, 45, 37, 0);
   Expect.equals(DateTime.SUNDAY, d.weekday);
   d = new DateTime(2011, 10, 1, 23, 45, 37, 0);
   Expect.equals(DateTime.SATURDAY, d.weekday);
   d = new DateTime(2011, 9, 30, 23, 45, 37, 0);
   Expect.equals(DateTime.FRIDAY, d.weekday);
 }
 
 void testToStrings() {
-  function test(date, time) {
+  void test(date, time) {
     { // UTC time.
       String source1 = "$date ${time}Z";
       String source2 = "${date}T${time}Z";
       var utcTime1 = DateTime.parse(source1);
       var utcTime2 = DateTime.parse(source1);
       Expect.isTrue(utcTime1.isUtc);
       Expect.equals(utcTime1, utcTime2);
       Expect.equals(source1, utcTime1.toString());
       Expect.equals(source2, utcTime1.toIso8601String());
     }
@@ skipping 23 matching lines @@
   testChangeTimeZone();
   testSubAdd();
   testUnderflowAndOverflow();
   testDateStrings();
   testEquivalentYears();
   testExtremes();
   testFarAwayDates();
   testWeekday();
   testToStrings();
 }