Deleting unused story sets

tools/perf/page_sets/memory_top_10_mobile.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.
 
 import re
 
 from telemetry.page import page as page_module
 from telemetry.page import shared_page_state
 from telemetry import story
 
@@ skipping 60 matching lines @@
         cloud_storage_bucket=story.PARTNER_BUCKET,
         verify_names=True)
 
     for url in top_10_mobile.URL_LIST:
       # We name pages so their foreground/background counterparts are easy
       # to identify. For example 'http://google.com' becomes
       # 'http_google_com' and 'after_http_google_com' respectively.
       name = re.sub(r'\W+', '_', url)
       self.AddStory(ForegroundPage(self, name, url))
       self.AddStory(BackgroundPage(self, 'after_' + name))
-
-
-class MemoryTop10MobileRealistic(MemoryTop10Mobile):
-  """Top 10 mobile user story in realistic mode.
-
-  This means, in particular, neither forced GCs nor clearing caches.
-  """
-  DETERMINISTIC_MODE = False