Delete all_page_actions, which is now empty.

tools/perf/page_sets/chrome_proxy/synthetic.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.
-# pylint: disable=W0401,W0614
-from telemetry.page.actions.all_page_actions import *
 from telemetry.page import page as page_module
 from telemetry.page import page_set as page_set_module
 
 
 class SyntheticPage(page_module.Page):
 
   def __init__(self, url, page_set):
     super(SyntheticPage, self).__init__(url=url, page_set=page_set)
     self.archive_data_file = '../data/chrome_proxy_synthetic.json'
 
 
 class SyntheticPageSet(page_set_module.PageSet):
 
   """ Chrome proxy synthetic test pages. """
 
   def __init__(self):
     super(SyntheticPageSet, self).__init__(
       archive_data_file='../data/chrome_proxy_synthetic.json')
 
     urls_list = [
       'http://aws1.mdw.la/fw',
       'http://aws1.mdw.la/static'
     ]
 
     for url in urls_list:
       self.AddPage(SyntheticPage(url, self))