CKeditor 3.6.4 set Toolbar Basic

I want to remove button to the toolbar in CKeditor 3.6.4

Based on the information here

https://docs-old.ckeditor.com/CKEditor_3.x/Developers_Guide/Toolbar

I have this config.js

/*
Copyright (c) 2003-2012, CKSource - Frederico Knabben. All rights reserved.
For licensing, see LICENSE.html or http://ckeditor.com/license
*/

CKEDITOR.editorConfig = function (config) {
    // Define changes to default configuration here. For example:
    // config.language = 'fr';
    // config.uiColor = '#AADC6E';

    config.toolbar_Basic =
        [
            ['Bold', 'Italic', '-', 'NumberedList', 'BulletedList', '-', 'Link', 'Unlink', '-', 'About']
        ];

    CKEDITOR.replace('editor1',
        {
            toolbar: 'Basic'
        });
};

But the toolbar is not changed.

It stays as default.

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="Default" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title></title>
    <script src="Scripts/ckeditor/adapters/jquery.js"></script>
    <script src="Scripts/ckeditor/ckeditor.js"></script>
    <script type="text/javascript">
        $(function () {
            $('#TextBox1').ckeditor();
        });
    </script>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <asp:TextBox ID="TextBox1" runat="server" TextMode="MultiLine" CssClass="ckeditor"></asp:TextBox>
        </div>
    </form>
</body>
</html>