[totaltec]

Frank, I do not have the front end of a site to look at right now, but I believe this code is assigned using the $custom_styles array.

Look in:
modules\Detailed_Product_Images\product_images.php

Search for:
$custom_styles['.dpimages-icons-box'] = array(
'width' => $box_width . 'px',
);

An alternative to changing this logic, would be to simply assign another CSS class to the box. I would add an additional class, and reference it more implicitly, rather than taking the class away and wondering if I messed up some JavaScript associated with it perhaps.