Removes all items from a feed.
$feed: An object describing the feed to be cleared.
function aggregator_remove($feed) {
_aggregator_get_variables();
// Call hook_aggregator_remove() on all modules.
module_invoke_all('aggregator_remove', $feed);
// Reset feed.
db_update('aggregator_feed')
->condition('fid', $feed->fid)
->fields(array(
'checked' => 0,
'hash' => '',
'etag' => '',
'modified' => 0,
))
->execute();
}