Hi Jonsecu,
Here is solution
$id=Tools::getValue('startestdelete');
$deleteid = 'star_scroller_id ='. $id;
Db::getInstance()->delete('star_scroller_text', $deleteid);
For More Clear check link,
http://doc.prestashop.com/pages/viewpage.action?pageId=51184692
Best Regards
Maneesh Tiwari