You can change active status of section using customize_section_active filter. It gives 2 parameters $active–bool and $section–object. Haven’t tried it so you can try and see if works for you.
Located in \wp-includes\class-wp-customize-section.php, for your research.
As second option you can try altering capability for the section.
Note: I’m just giving options, and have not done any of these before. So not sure about it.