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

tools/perf/benchmarks/page_cycler.py

 # Copyright 2013 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 core import perf_benchmark
 
 from measurements import page_cycler
 import page_sets
 from telemetry import benchmark
 
@@ skipping 129 matching lines @@
 
   def CreateStorySet(self, options):
     # Disable the taobao.com page since it's crashing. crbug.com/509690
     stories = page_sets.Top10MobilePageSet(run_no_page_interactions=True)
     found = next((x for x in stories if 'taobao.com' in x.url), None)
     if found:
       stories.RemoveStory(found)
     return stories
 
 
-@benchmark.Disabled('all')
-class PageCyclerKeyMobileSites(_PageCycler):
-  """Page load time benchmark for key mobile sites."""
-  page_set = page_sets.KeyMobileSitesPageSet
-
-  @classmethod
-  def Name(cls):
-    return 'page_cycler.key_mobile_sites_smooth'
-
-
 @benchmark.Disabled('android')  # crbug.com/357326
 class PageCyclerToughLayoutCases(_PageCycler):
   """Page loading for the slowest layouts observed in the Alexa top 1 million.
 
   Recorded in July 2013.
   """
   page_set = page_sets.ToughLayoutCasesPageSet
 
   @classmethod
   def Name(cls):
@@ skipping 40 matching lines @@
   set, without running in out-of-process iframes mode.. """
   page_set = page_sets.OopifBasicPageSet
 
   @classmethod
   def Name(cls):
     return 'page_cycler.basic_oopif'
 
   @classmethod
   def ShouldDisable(cls, possible_browser):
     return cls.IsSvelte(possible_browser)  # http://crbug.com/607657
-
-
-@benchmark.Disabled('all')  # crbug.com/443730
-class PageCyclerBigJs(_PageCycler):
-  page_set = page_sets.BigJsPageSet
-
-  @classmethod
-  def Name(cls):
-    return 'page_cycler.big_js'