Delete all test isolate file.

testing/chromoting/multi_machine_example/example_task.isolate

Index: testing/chromoting/multi_machine_example/example_task.isolate
diff --git a/testing/chromoting/multi_machine_example/example_task.isolate b/testing/chromoting/multi_machine_example/example_task.isolate
deleted file mode 100644
index 87869f3bba9c32677f94ef045367cbc5a4b91ea5..0000000000000000000000000000000000000000
--- a/testing/chromoting/multi_machine_example/example_task.isolate
+++ /dev/null
@@ -1,18 +0,0 @@
-# Copyright 2015 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-{
-  'includes': [
-    '../chromoting_browser_tests.isolate',
-    '../../legion/legion.isolate',
-    '../../../chrome/chrome.isolate',
-    '../../../remoting/tools/remote_test_helper/remote_test_helper.isolate',
-  ],
-  'variables': {
-    'command': [
-      'python',
-      '../../legion/run_task.py',
-    ],
-  },
-}