Temporarily remove kapook.com from startup_pages page set

tools/perf/page_sets/startup_pages_record.py

 # Copyright 2014 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.
 from telemetry.page import page as page_module
 from telemetry import story
 
 
 class StartupPagesRecordPage(page_module.Page):
 
   def __init__(self, url, page_set):
@@ skipping 10 matching lines @@
       fails on about:blank, which we want to include in startup testing.
   """
 
   def __init__(self):
     super(StartupPagesRecordPageSet, self).__init__(
         archive_data_file='data/startup_pages.json')
 
     urls_list = [
         # Why: typical page
         'http://bbc.co.uk',
+        # TODO(charliea): Reenable this when kabook.com is no longer crashing.
+        # crbug.com/667470
         # Why: Horribly complex page - stress test!
-        'http://kapook.com',
+        # 'http://kapook.com',
     ]
 
     for url in urls_list:
       self.AddStory(StartupPagesRecordPage(url, self))