[tools/perf] Delete unused variable

tools/perf/benchmarks/spaceport.py

 # Copyright 2012 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.
 
 """Runs spaceport.io's PerfMarks benchmark."""
 
 import logging
 import os
 
 from core import path_util
@@ skipping 40 matching lines @@
 
 class _SpaceportMeasurement(page_test.PageTest):
 
   def __init__(self):
     super(_SpaceportMeasurement, self).__init__()
 
   def CustomizeBrowserOptions(self, options):
     options.AppendExtraBrowserArgs('--disable-gpu-vsync')
 
   def ValidateAndMeasurePage(self, page, tab, results):
+    del page  # unused
     tab.WaitForJavaScriptExpression(
         '!document.getElementById("start-performance-tests").disabled', 60)
 
     tab.ExecuteJavaScript("""
         window.__results = {};
         window.console.log = function(str) {
             if (!str) return;
             var key_val = str.split(': ');
             if (!key_val.length == 2) return;
             __results[key_val[0]] = key_val[1];
@@ skipping 42 matching lines @@
   @classmethod
   def Name(cls):
     return 'spaceport'
 
   def CreateStorySet(self, options):
     spaceport_dir = os.path.join(path_util.GetChromiumSrcDir(), 'chrome',
                                  'test', 'data', 'third_party', 'spaceport')
     ps = story.StorySet(base_dir=spaceport_dir)
     ps.AddStory(page_module.Page('file://index.html', ps, ps.base_dir))
     return ps