[erp5_xhtml_style] Drop invalid HTML5 headers

product/ERP5/bootstrap/erp5_xhtml_style/SkinTemplateItem/portal_skins/erp5_xhtml_style/global_definitions.zpt

@@ -43,8 +43,6 @@
     <meta name="description" tal:attributes="content description | title | string:ERP5 Free Open Source ERP and CRM" />
     <meta name="keywords" tal:attributes="content python:', '.join(subject_list)" />
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
-    <meta http-equiv="Content-Script-Type" content="text/javascript" />
-    <meta http-equiv="Content-Style-Type" content="text/css" />
     <title
       tal:define="
         title title | string:ERP5;