First of all I'd like to say I'm sorry to both you people with this. I tried some stuff to unsubscribe by going to the default urls of sourceforge lists etc, but that didn't helped. I went to wine.sf.net, but didn't found any public mailing list, and I can't remember where I subscribed to this list.
well the mail address is at wine-devel@winehq.com so, perhaps, www.winehq.com would be the answer
A+