[Telemetry] Cleanup some unused variables in page_sets.

tools/perf/page_sets/blink_memory_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 logging
 
 from telemetry.page import page as page_module
 from telemetry.page import shared_page_state
 from telemetry import story
 
@@ skipping 99 matching lines @@
         'http://en.m.wikipedia.org/wiki/Wikipedia',
         page_set=self,
         name='Wikipedia (1 tab) - delayed scroll start',))
     self.AddStory(BlinkMemoryMobilePage(
         url='http://www.reddit.com/r/programming/comments/1g96ve',
         page_set=self,
         name='Reddit'))
     self.AddStory(BlinkMemoryMobilePage(
         'https://en.blog.wordpress.com/2012/09/04/freshly-pressed-editors-picks-for-august-2012/',
         page_set=self,
-       name='Wordpress'))
+        name='Wordpress'))
 
     # Why: Renderer memory usage is high.
     self.AddStory(BlinkMemoryMobilePage(
         'http://worldjournal.com/',
         page_set=self,
         name='Worldjournal'))
 
     # Why: Key products.
     self.AddStory(GmailPage(page_set=self))
     self.AddStory(BlinkMemoryMobilePage(
         'http://googlewebmastercentral.blogspot.com/2015/04/rolling-out-mobile-friendly-update.html?m=1',
         page_set=self,
         name='Blogger'))
     self.AddStory(BlinkMemoryMobilePage(
         'https://plus.google.com/app/basic/110031535020051778989/posts?source=apppromo',
         page_set=self,
         name='GooglePlus'))