cyrus-imapd-2.2 removal

[Ondřej Surý]

Hi,

I was thinking that since we have an automatic upgrade script now (and
I will push upstream to move the logic to cvt_cyrusdb), we could drop
cyrus-imapd-2.2 from unstable by creating empty virtual packages built
from cyrus-imapd-2.4.

What do you think? Next release will be in two years, that's plenty of time...

Ondrej
-- 
Ondřej Surý <ondrej at sury.org>