Revert of Refactor serving_dirs.

tools/telemetry/telemetry/user_story/__init__.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.
 
 import re
 from telemetry.user_story import shared_user_story_state
 
 _next_user_story_id = 0
 
 
@@ skipping 81 matching lines @@
       return self.name
     else:
       return self.__class__.__name__
 
   @property
   def is_local(self):
     """Returns True iff this user story does not require network."""
     return self._is_local
 
   @property
-  def serving_dir(self):
-    """Returns the absolute path to a directory with hash files to data that
-       should be updated from cloud storage, or None if no files need to be
-       updated.
-    """
-    return None
-
-  @property
   def make_javascript_deterministic(self):
     return self._make_javascript_deterministic