Deleting unused story sets

tools/perf/page_sets/top_25_smooth.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
 
 from page_sets.login_helpers import google_login
 from page_sets import top_pages
 
@@ skipping 157 matching lines @@
         # Why: #1 Alexa sports
         'http://sports.yahoo.com/',
     ]
 
     if techcrunch:
       # Why: top tech blog
       other_urls.append('http://techcrunch.com')
 
     for url in other_urls:
       self.AddStory(TopSmoothPage(url, self))
-
-
-class V8Top25SmoothPageSet(Top25SmoothPageSet):
-  def __init__(self):
-    # Disabled for V8 because of crbug.com/507836, crbug.com/527425
-    super(V8Top25SmoothPageSet, self).__init__(techcrunch=False)