Removing verify_names=True now that the default for verify_names is True

tools/perf/page_sets/tough_image_decode_cases.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.page import page as page_module
 from telemetry.page import shared_page_state
 from telemetry import story
 
 class ToughImageDecodeCasesPage(page_module.Page):
 
   def __init__(self, url, name, page_set):
@@ skipping 13 matching lines @@
 
 class ToughImageDecodeCasesPageSet(story.StorySet):
 
   """
   Description: A collection of difficult image decode tests
   """
 
   def __init__(self):
     super(ToughImageDecodeCasesPageSet, self).__init__(
       archive_data_file='data/tough_image_decode_cases.json',
-      cloud_storage_bucket=story.PUBLIC_BUCKET,
-      verify_names=True)
+      cloud_storage_bucket=story.PUBLIC_BUCKET)
 
     page_name_list = [
       'http://localhost:9000/cats-unscaled.html',
       'http://localhost:9000/cats-viewport-width.html'
     ]
 
     for name in page_name_list:
       self.AddStory(ToughImageDecodeCasesPage(
         name, name, self))