Remove unused V8 integration code in Sky

sky/engine/bindings/templates/dictionary_impl.h

-// Copyright 2014 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.
-
-// This file has been auto-generated by {{code_generator}}. DO NOT MODIFY!
-
-#ifndef {{cpp_class}}_h
-#define {{cpp_class}}_h
-
-{% for filename in header_includes %}
-#include "{{filename}}"
-{% endfor %}
-
-namespace blink {
-
-class {{cpp_class}} final {
-public:
-    static {{cpp_class}}* create()
-    {
-        return new {{cpp_class}};
-    }
-
-    {% for member in members %}
-    bool {{member.has_method_name}}() const { return {{member.has_method_expression}}; }
-    {{member.rvalue_cpp_type}} {{member.name}}() const { return {{member.getter_expression}}; }
-    void {{member.setter_name}}({{member.rvalue_cpp_type}} value) { m_{{member.name}} = value; }
-    {% endfor %}
-
-private:
-    {{cpp_class}}();
-
-    {% for member in members %}
-    {{member.member_cpp_type}} m_{{member.name}};
-    {% endfor %}
-
-    friend class V8{{cpp_class}};
-};
-
-} // namespace blink
-
-#endif // {{cpp_class}}_h