/home/edulekha/studygroup.edulekha.com/ow_plugins/groups/update/7287/update.php

<?php

try {
    $action = Updater::getAuthorizationService()->findAction("groups", "delete_comment_by_content_owner");
    Updater::getAuthorizationService()->deleteAction($action->id);
} catch (Exception $e) {}

[F] update.php