Drupal 6: Use hook_form_alter() to remove the "Remove" button on Ubercart's cart form

d6_uc_cart_form_alter.php

<?php
function modulename_form_alter(&$form, $form_state, $form_id) {
  switch ( $form_id ) {
    case 'uc_cart_view_form':
      /*
      * This is how you can remove the "remove" 
      * button for each item.
      */
      foreach($form['items'] as $k => $v ) {
        if(is_integer($k) && isset($v['remove'])) {
          unset($form['items'][$k]['remove']);
        }
      }
      /*
      * If you remove the "remove" button from the form
      * you'll want to remove the table head (thead) cell text.
      */
      foreach($form['items']['#columns'] as $k => $v) {
        unset($form['items']['#columns'][$k]['cell']);
      }
      /*
      * This is how you can remove the "remove" column entirely.
      */
      unset($form['items']['#columns']['remove']);
     
      unset($form['update']);
      break;
    default :
      break;
  }
}
?>