How to Hide the "Simple GDPR" Admin Menu

function plt_hide_simple_gdpr_cookie_compliance_menus() {
	//Hide the "Simple GDPR" menu.
	remove_menu_page('simple-gdpr-cookie-compliance');
}

add_action('admin_menu', 'plt_hide_simple_gdpr_cookie_compliance_menus', 11);

Where do I put this code?