Delete all_page_actions, which is now empty.

tools/perf/page_sets/tough_animation_cases.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 ToughAnimationCasesPage(page_module.Page):
 
   def __init__(self, url, page_set, need_measurement_ready):
     super(ToughAnimationCasesPage, self).__init__(url=url, page_set=page_set)
     self.archive_data_file = 'data/tough_animation_cases.json'
     self._need_measurement_ready = need_measurement_ready
@@ skipping 54 matching lines @@
       'file://tough_animation_cases/transform_transitions.html',
       # Why: Login page is slow because of ineffecient transform operations.
       'http://ie.microsoft.com/testdrive/performance/robohornetpro/',
       # Why: JS execution blocks CSS transition unless initial transform is set.
       'file://tough_animation_cases/transform_transition_js_block.html'
     ]
 
     for url in urls_list_two:
       self.AddPage(ToughAnimationCasesPage(url, self,
                                            need_measurement_ready=False))