Move all tests using dart:io to a separate directory

tests/standalone/src/TimerCancelTest.dart

Index: tests/standalone/src/TimerCancelTest.dart
diff --git a/tests/standalone/src/TimerCancelTest.dart b/tests/standalone/src/TimerCancelTest.dart
deleted file mode 100644
index 48f461ff2fa4fc6cf4cfa219e4dc8d64fc7dfc99..0000000000000000000000000000000000000000
--- a/tests/standalone/src/TimerCancelTest.dart
+++ /dev/null
@@ -1,42 +0,0 @@
-// 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("dart:io");
-
-void testSimpleTimer() {
-  Timer cancelTimer;
-  int repeatTimer;
-
-  void timeoutHandlerUnreachable(Timer timer) {
-    Expect.equals(true, false);
-  }
-
-  void timeoutHandler(Timer timer) {
-    cancelTimer.cancel();
-  }
-
-  void timeoutHandlerRepeat(Timer timer) {
-    repeatTimer++;
-    timer.cancel();
-    Expect.equals(true, repeatTimer == 1);
-  }
-
-  cancelTimer = new Timer(timeoutHandlerUnreachable, 1000);
-  cancelTimer.cancel();
-  new Timer(timeoutHandler, 1000);
-  cancelTimer = new Timer(timeoutHandlerUnreachable, 2000);
-  repeatTimer = 0;
-  new Timer.repeating(timeoutHandlerRepeat, 1500);
-}
-
-void testCancelTimerWithSameTime() {
-  var t2;
-  var t1 = new Timer((t) => t2.cancel(), 0);
-  t2 = new Timer((t) => t1.cancel(), 0);
-}
-
-main() {
-  testSimpleTimer();
-  testCancelTimerWithSameTime();
-}