Remove some page_cycler benchmarks that have been disabled for a long time

tools/perf/page_sets/big_js.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 shared_page_state
-from telemetry import story
-
-class BigJsPageSet(story.StorySet):
-
-  """ Sites which load and run big JavaScript files."""
-
-  def __init__(self):
-    super(BigJsPageSet, self).__init__(
-      archive_data_file='data/big_js.json',
-      cloud_storage_bucket=story.PARTNER_BUCKET)
-
-    # www.foo.com is a dummy page to make it easier to run only one interesting
-    # page at a time. You can't just run the interesting page on its own: Page
-    # sets with only one page don't work well, since we end up reusing a
-    # renderer all the time and it keeps its memory caches alive (see
-    # crbug.com/403735).
-    urls_list = [
-       'http://beta.unity3d.com/jonas/DT2/',
-       'https://www.youtube.com/watch?v=IJNR2EpS0jw',
-       'http://www.foo.com',
-    ]
-    for url in urls_list:
-      self.AddStory(page_module.Page(
-          url, self,
-          shared_page_state_class=shared_page_state.SharedDesktopPageState))