Remove jitter page set

tools/perf/page_sets/jitter_pages.py

-# 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.
-from telemetry import page as page_module
-from telemetry import story
-from telemetry.page import shared_page_state
-
-
-def _IssueMarkerAndScroll(action_runner):
-  with action_runner.CreateGestureInteraction('ScrollAction'):
-    action_runner.ScrollPage()
-
-class JitterPage(page_module.Page):
-
-  def __init__(self, url, page_set, name=''):
-    super(JitterPage, self).__init__(
-        url=url, page_set=page_set, name=name,
-        shared_page_state_class=shared_page_state.SharedDesktopPageState)
-
-  def RunPageInteractions(self, action_runner):
-    _IssueMarkerAndScroll(action_runner)
-
-class JitterPageSet(story.StorySet):
-
-  def __init__(self):
-    super(JitterPageSet, self).__init__()
-
-    urls = [
-        # one fixed layer with no jitter
-        'file://jitter_test_cases/fixed.html',
-        # one layer that jitters
-        'file://jitter_test_cases/one_layer_jitter.html',
-        # one layer inside another, both jitter together
-        'file://jitter_test_cases/child_jitter_with_parent.html',
-        # two non overlapping layers jitter
-        'file://jitter_test_cases/two_layers_jitter.html',
-        # jittering layer size bigger
-        'file://jitter_test_cases/big_layer_jitter.html',
-    ]
-
-    for url in urls:
-      self.AddStory(JitterPage(url, self))