Implements hook_aggregator_remove().
function aggregator_aggregator_remove($feed) {
$iids = db_query('SELECT iid FROM {aggregator_item} WHERE fid = :fid', array(
':fid' => $feed->fid,
))
->fetchCol();
if ($iids) {
db_delete('aggregator_category_item')
->condition('iid', $iids, 'IN')
->execute();
}
db_delete('aggregator_item')
->condition('fid', $feed->fid)
->execute();
drupal_set_message(t('The news items from %site have been removed.', array(
'%site' => $feed->title,
)));
}