Method deleteCategoriesFromProduct

public static function deleteCategoriesFromProduct($categoryArray, $productId)
{
    $db = Factory::getDBO();
    if (!empty($categoryArray)) {
        foreach ($categoryArray as $k => $v) {
            $query = ' DELETE ' . ' FROM #__phocacart_product_categories' . ' WHERE product_id = ' . (int) $productId . ' AND category_id = ' . (int) $v;
            $db->setQuery($query);
            $db->execute();
        }
    }
    return true;
}