Revert of Add a broken page to dummy_benchmark.noisy_benchmark_1

tools/perf/benchmarks/dummy_benchmark.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.
 """Dummy benchmarks for the bisect FYI integration tests.
 
 The number they produce aren't meant to represent any actual performance
 data of the browser. For more information about these dummy benchmarks,
 see: https://goo.gl/WvZiiW
 """
 
@@ skipping 41 matching lines @@
 
 class DummyBenchmarkTwo(_DummyBenchmark):
   """A noisy benchmark with mean=50 & std=20."""
 
   def CreatePageTest(self, options):
     return _DummyTest(50, 20)
 
   @classmethod
   def Name(cls):
     return 'dummy_benchmark.noisy_benchmark_1'
-
-  def CreateStorySet(self, options):
-    del options  # unused
-    story_set = dummy_story_set.DummyStorySet()
-    story_set.AddStory(dummy_story_set.BrokenDummyPage(story_set))
-    return story_set
-