Update metrics verification for dev-proxy.

tools/chrome_proxy/integration_tests/chrome_proxy_pagesets/bypass.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.page import page_set as page_set_module
 
 
 class BypassPage(page_module.Page):
 
   def __init__(self, url, page_set):
     super(BypassPage, self).__init__(url=url, page_set=page_set)
     self.archive_data_file = '../data/chrome_proxy_bypass.json'
 
 
 class BypassPageSet(page_set_module.PageSet):
 
   """ Chrome proxy test sites """
 
   def __init__(self):
     super(BypassPageSet, self).__init__(
       archive_data_file='../data/chrome_proxy_bypass.json')
 
     urls_list = [
       'http://aws1.mdw.la/bypass/',
-      'http://aws1.mdw.la/piatek/bypass-demo'
     ]
 
     for url in urls_list:
       self.AddPage(BypassPage(url, self))