Remove superfluous PRETTY_FUNCTION define

Source/config.gyp

 #
 # Copyright (C) 2013 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
@@ skipping 34 matching lines @@
       'msvs_disabled_warnings': [
         4138, 4244, 4291, 4305, 4344, 4355, 4521, 4099,
       ],
       'conditions': [
         ['OS=="win" and component=="shared_library"', {
           'defines': [
             'USING_V8_SHARED',
           ],
         }],
         ['OS=="win"', {
-          'defines': [
-            '__PRETTY_FUNCTION__=__FUNCTION__',
-          ],
           'sources/': [
             ['exclude', 'Posix\\.cpp$'],
           ],
         },{ # OS!="win"
           'sources/': [
             ['exclude', 'Win\\.cpp$'],
           ],
         }],
         ['OS!="mac"', {
           'sources/': [
@@ skipping 48 matching lines @@
     ],
     'direct_dependent_settings': {
       'cflags!': ['-Wglobal-constructors'],
       'xcode_settings': {
         'WARNING_CFLAGS!': ['-Wglobal-constructors'],
       },
     },
   }
   ],
 }