dsync: Don't remove other namespaces entirely, just skip the unwanted ones. This fixes incorrectly removing subscriptions=no namespaces entries from subscriptions.
dsync: Don't remove other namespaces entirely, just skip the unwanted ones.
This fixes incorrectly removing subscriptions=no namespaces entries from
subscriptions.

LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot