Process language deletion submissions.
function language_admin_delete_form_submit($form, &$form_state) {
$langcode = $form_state['values']['langcode'];
$languages = language_list();
$language = $languages[$langcode];
$success = language_delete($langcode);
if ($success) {
$t_args = array(
'%language' => $language->name,
'%langcode' => $language->langcode,
);
drupal_set_message(t('The %language (%langcode) language has been removed.', $t_args));
}
$form_state['redirect'] = 'admin/config/regional/language';
}