Drupal Hide Group/Sub Groups

hide_group_fields.php

<?php
/**
 * Helper function to hide group and sub groups from a form.
 *
 * @param $form
 *  Reference to a nested array of form elements that comprise the form.
 * @param $group_names
 *  Array containing the names of the groups you want to hide.
 */
function field_group_hide_field_groups(&$form, $group_names) {
  foreach ($group_names as $group_name) {
    if (isset($form['#fieldgroups'][$group_name]) && isset($form['#group_children'])) {
      $form['#fieldgroups'][$group_name]->format_type = 'hidden';
      foreach (array_keys($form['#group_children'], $group_name) as $field_name) {
        if (isset($form['#fieldgroups'][$field_name])) {
          $sub_groups[] = $field_name;
        } else {
          $form[$field_name]['#access'] = FALSE;
        }
      }

      if(isset($sub_groups)) {
        field_group_hide_field_groups($form, $sub_groups);
      }
    }
  }
}