Revert of Four new pages added to tough_scheduling_cases...

Revert of Four new pages added to tough_scheduling_cases (https://codereview.chromium.org/372243003/)

Reason for revert:
All new pages failing on all android bots.

Example:
http://chromegw/i/chromium.perf/builders/Android%20Nexus4%20Perf/builds/1116/steps/scheduler.tough_scheduling_cases/logs/stdio

We shouldn't try to reland without some kind of unittest coverage (perhaps the smoke test?).



Original issue's description:
> Four new pages added to tough_scheduling_cases
> 
> BUG=391005
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=282740
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=284060

TBR=jdduke@chromium.org,skyostil@chromium.org,picksi@google.com,miletus@chromium.org,picksi@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=391005

Review URL: https://codereview.chromium.org/406783002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@284344 0039d316-1c4b-4281-b951-d872f2087c98

tools/perf/page_sets/data/tough_scheduling_cases.json

-{
-    "description": "Describes the Web Page Replay archives for a page set. Don't edit by hand! Use record_wpr for updating.", 
-    "archives": {
-        "tough_scheduling_cases_000.wpr": [
-            "http://www.latimes.com", 
-            "http://io9.com/the-10-most-shocking-characters-that-george-r-r-martin-1579481155/+tinaamini", 
-            "http://ftw.usatoday.com/2014/05/spelling-bee-rules-shenanigans", 
-            "http://m.espn.go.com/nhl/rankings"
-        ]
-    }
-}
\ No newline at end of file

tools/perf/page_sets/data/tough_scheduling_cases_000.wpr.sha1

-df1197a21ff4790f555016698e1ce97886d91d52
\ No newline at end of file

tools/perf/page_sets/tough_scheduling_cases.py

@@ -371,8 +371,7 @@ class ToughSchedulingCasesPageSet(page_set_module.PageSet):
   """ Tough scheduler latency test cases """
 
   def __init__(self):
-    super(ToughSchedulingCasesPageSet, self).__init__(
-        archive_data_file='data/tough_scheduling_cases.json')
+    super(ToughSchedulingCasesPageSet, self).__init__()
 
     # Why: Simple scrolling baseline
     self.AddPage(ToughSchedulingCasesPage(
@@ -466,14 +465,3 @@ class ToughSchedulingCasesPageSet(page_set_module.PageSet):
       page_set=self))
     # Why: For measuring the latency of scroll-synchronized effects.
     self.AddPage(SynchronizedScrollOffsetPage(page_set=self))
-
-    real_pages_url_list = [
-        'http://www.latimes.com',
-        ('http://io9.com/the-10-most-shocking-characters-that-george-r-r-' +
-         'martin-1579481155/+tinaamini'),
-        'http://ftw.usatoday.com/2014/05/spelling-bee-rules-shenanigans',
-        'http://m.espn.go.com/nhl/rankings'
-    ]
-
-    for url in real_pages_url_list:
-      self.AddPage(ToughSchedulingCasesPage(url, self))