Before 6.7.3 goes out in App Store but after our release candidate smoke test, we need to turn off the beta survey announcement that's currently returning from wikifeeds. This announcement was originally turned on as a part of https://phabricator.wikimedia.org/T266274.
I think the best way to do this is to adjust the startTime and endTime to some date in the past. That should prevent the server from returning the announcement entirely. We will turn the announcement back on ~1 week after 6.7.3 goes out as a part of https://phabricator.wikimedia.org/T268173.