remove some dead visual studio < 2013 code

base/win/win_util.cc

 // Copyright (c) 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.
 
 #include "base/win/win_util.h"
 
 #include <aclapi.h>
 #include <cfgmgr32.h>
 #include <lm.h>
 #include <powrprof.h>
@@ skipping 430 matching lines @@
   // deployed.
   if (os_info->version() == base::win::VERSION_SERVER_2003)
     return false;
 
   DCHECK(os_info->version() >= base::win::VERSION_VISTA);
   return true;  // New enough to have SHA-256 support.
 }
 
 }  // namespace win
 }  // namespace base
-
-#ifdef _MSC_VER
-
-// There are optimizer bugs in x86 VS2012 pre-Update 1.
-#if _MSC_VER == 1700 && defined _M_IX86 && _MSC_FULL_VER < 170051106
-
-#pragma message("Relevant defines:")
-#define __STR2__(x) #x
-#define __STR1__(x) __STR2__(x)
-#define __PPOUT__(x) "#define " #x " " __STR1__(x)
-#if defined(_M_IX86)
-  #pragma message(__PPOUT__(_M_IX86))
-#endif
-#if defined(_M_X64)
-  #pragma message(__PPOUT__(_M_X64))
-#endif
-#if defined(_MSC_FULL_VER)
-  #pragma message(__PPOUT__(_MSC_FULL_VER))
-#endif
-
-#pragma message("Visual Studio 2012 x86 must be updated to at least Update 1")
-#error Must install Update 1 to Visual Studio 2012.
-#endif
-
-#endif  // _MSC_VER
-