Remove abandoned FBsync app from apps.nextcloud.com

@skjnldsv (as github repo is read-only, cannot fill issue there so writing here) Hello, would it be possible to remove this app from App Store to clean up please?
https://nextcloudappstore.readthedocs.io/en/latest/restapi.html#delete-an-app
Thanks :slight_smile:

Done :slight_smile:
Thanks!