Really remove config.h

sky/engine/bindings/scripts/templates/callback_interface_cpp.template

 // Copyright 2014 The Dartium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This file has been auto-generated by {{code_generator_dart}}. DO NOT MODIFY!
 
-#include "sky/engine/config.h"
 #include "{{dart_class}}.h"
 
 {% for filename in cpp_includes %}
 #include "{{filename}}"
 {% endfor %}
 
 #include "sky/engine/tonic/dart_api_scope.h"
 #include "sky/engine/tonic/dart_converter.h"
 #include "sky/engine/tonic/dart_isolate_scope.h"
 
@@ skipping 22 matching lines @@
     Dart_Handle *arguments = 0;
     {% endif %}
 
     {% set return_with = 'return'
            if method.idl_type == 'boolean' else '' %}{# void #}
     {{return_with}} callback_.handleEvent({{method.arguments | length}}, arguments);
 }
 
 {% endfor %}
 }  // namespace blink