mess with Drupal 7 status messages

gistfile1.php

/**
 * Implements hook_preprocess_status_messages().
 *
 * Remove the login warning message, anon users can only see the login form anyway.
 */
function intranet_preprocess_status_messages(&$vars) {
  $messages = drupal_get_messages('error');
  if (!empty($messages['error'])) {
    $errors = $messages['error'];
    foreach ($errors as $error) {
      if ($error == t('Access denied. You may need to login below or register to access this page.')) {
        continue;
      }
      drupal_set_message($error, 'error');
    }
  }
}