Remove profile_safe_urls page set & corresponding wpr recording

Bug: 767544
Change-Id: Ie0c22a5f45ffeb3ecf99e6f9f8bb4c6ce21716bc
Reviewed-on: https://chromium-review.googlesource.com/677552Reviewed-by: Helen Li <xunjieli@chromium.org>
Commit-Queue: Ned Nguyen <nednguyen@google.com>
Cr-Commit-Position: refs/heads/master@{#503590}

tools/perf/page_sets/data/profile_safe_urls_000.wpr.sha1

-5f21e6c824007764cd75cff772be40dee5b47c4a
\ No newline at end of file

tools/perf/page_sets/profile_safe_urls.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 profile_creators import profile_safe_url_list
-from telemetry.page import page as page_module
-from telemetry.page import shared_page_state
-from telemetry import story
-
-
-class ProfileSafeUrlPage(page_module.Page):
-  def __init__(self, url, page_set):
-    super(ProfileSafeUrlPage, self).__init__(
-        url=url,
-        # Make sure story name is not too long and has type 'str' instead of
-        # 'unicode'.
-        name=str(url[:140]),
-        page_set = page_set,
-        shared_page_state_class=shared_page_state.SharedDesktopPageState,
-        credentials_path = 'data/credentials.json')
-    self.credentials = 'google'
-
-
-class ProfileSafeUrlsPageSet(story.StorySet):
-  """Safe urls used for profile generation."""
-
-  def __init__(self):
-    super(ProfileSafeUrlsPageSet, self).__init__(
-      archive_data_file='data/profile_safe_urls.json',
-      cloud_storage_bucket=story.PARTNER_BUCKET)
-
-    # Only use the first 500 urls to prevent the .wpr files from getting too
-    # big.
-    safe_urls = profile_safe_url_list.GetShuffledSafeUrls()[0:500]
-    for safe_url in safe_urls:
-      self.AddStory(ProfileSafeUrlPage(safe_url, self))