Drupal 7 - Hide labels for empty display suite fields

d7_display_suite_hide_labels_function.php

/**
 * Implements hook_field_attach_view_alter().
 *
 * Hide label of display suite fields if field content is empty.
 */
function 	cof_directory_field_attach_view_alter(&$output, $context) {
  $displaySuiteFields = array("graduate_students","office_location");
  
  foreach ($output as $field_name => $field) {
    if (!empty($field['#label_display'])) {
      $fieldText = "1";
      if (in_array($field_name, $displaySuiteFields)) {
        $fieldText = trim(strip_tags($field[0]['#markup']));
      }
      if(empty($fieldText) || (isset($field[0]['#markup']) && empty($field[0]['#markup']) && ($field[0]['#markup'] !== 0))) {
        unset($output[$field_name]);
      }
    }
  }
}

Updated to hide the entire field so that the empty divs won't be rendered.