How do I remove empty photo box on documents-general items?

[smurfy1]

I have a custom directory with a custom template. I tried removing the section in the tpl_document_general_info_display.php there with no luck. Then I tried editing the original file and still no luck. I am simply removing the code:
<!--bof Main Product Image -->
<?php
if (zen_not_null($products_image)) {
?>
<?php
/**
* display the main product image
*/
require($template->get_template_dir('/tpl_modules_main_product_image.php',DIR_WS_TEMPLATE, $current_page_base,'templates'). '/tpl_modules_main_product_image.php'); ?>
<?php
}
?>
<!--eof Main Product Image-->

I'm not very technical so I'm sure it's operator error. Is removing it incorrect?

Do you have a template installed?
If so what is the directory it is in?

Did you edit the version in your template directory?
or did you edit the original version?