Remove Import/Export option

Hi All,

Does anyone know if there is a way to remove the import/export button in the OpenDialog API?

I tried to hide many option in the OptionsDialog folder but nothing seems to be the right key ;(

<folder name="OptionsDialog">

        <file name="Advanced.instance_hidden"/>

        <file name="General.instance_hidden"/>

        <file name="Action.instance_hidden"/>

        <file name="PreviewExamples.instance_hidden"/>

    </folder>

Any ideas?!

Regards,

Raffael