I have installed the module subusers and appears a tab named "Subusers" in the profile. How can I remove this tab?

I tested this code in template.tpl.php and I didn't work:

```
function mytheme_preprocess_page(&$vars) {

$unwanted_tabs = array('user/%/subuser');
  foreach ($variables['tabs'] as $group_key => $tab_group) {
    if (is_array($tab_group)) {
      foreach ($tab_group as $key => $tab) {
        if (isset($tab['#link']['path']) && in_array($tab['#link']['path'], $unwanted_tabs)){
          unset($variables['tabs'][$group_key][$key]);
        }
      }
    }
  }
}

```

I tried with this code:

```
function mymodule_menu_alter(&$items) {
    unset($items['user/%/subuser']);
}

```

Thanks.