remove some dead visual studio < 2013 code

chrome/app/delay_load_hook_win.cc

 // Copyright (c) 2013 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.
 
 #include "chrome/app/delay_load_hook_win.h"
 
-#if defined(_WIN32_WINNT_WIN8) && _MSC_VER < 1700
-// The Windows 8 SDK defines FACILITY_VISUALCPP in winerror.h, and in
-// delayimp.h previous to VS2012.
-#undef FACILITY_VISUALCPP
-#endif
 #include <DelayIMP.h>
 
 #include "base/logging.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 
 // So long as these symbols are supplied to the final binary through an
 // object file (as opposed to indirectly through a library), these pointers
 // will override the CRT's symbols and direct the notifications to our hook.
 // Alternatively referencing the ChromeDelayLoadHook function somehow will
@@ skipping 54 matching lines @@
 
     default:
       NOTREACHED() << "Impossible delay load notification.";
       break;
   }
 
   // Returning NULL causes the delay load machinery to perform default
   // processing for this notification.
   return NULL;
 }