-// I think the first comment or like on a post whose home is our Friendica server is saved as an item
-// as the top-level post owner's contact for writer of the comment or post. Thus, the "uid"
-// on the item is `user`.`id` of the top-level post owner. That user is passed to this function
-// as "$owner."
-//
-// I'm assuming for now that "$owner" will be the user of the top-level post for retractions too. Be
-// aware that another reasonable possibility is that it's the "$owner" of the deleted comment.
-
-// TODO
-// CHECK 1. If we receive a retraction from Diaspora to be relayed by us, we need to insert the signature
-// into the DB and call notifier.php
-// CHECK 2. diaspora_send_retraction() needs to be modified to send
-// Diaspora a retraction for it to relay when appropriate
-// CHECK 3. notifier.php (and delivery.php?) need to be modified to call the right functions for the right
-// retraction situation
-// 4. If possible, modify notifier.php (and delivery.php?) to remove the relayable retraction's signature
-// from the DB after finishing with relaying retractions
-