Noissue - Cleanup. Remove last remnants of old thread code.

test/UpdateCheck.cpp

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-present eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <functional>
-
 #include "BaseJsTest.h"
 
 using namespace AdblockPlus;
 
 namespace
 {
   void FindAndReplace(std::string& source, const std::string& find, const std::string& replace)
   {
     for (size_t pos = 0; (pos = source.find(find), pos) != std::string::npos; pos += replace.size())
       source.replace(pos, find.size(), replace);
@@ skipping 267 matching lines @@
 
   // ensure that the was the corresponding request
   EXPECT_FALSE(ProcessPendingUpdateWebRequest().empty());
 
   EXPECT_FALSE(eventCallbackCalled);
   EXPECT_EQ(1, timesCalled);
 
   // previous handler is not restored
   EXPECT_FALSE(eventCallbackCalled);
 }