After two months running the poll, it's time to end this one as it has reached February. Here are the poll results:
Yes 46 (83%)
No 9 (16%)
So, with 83%, it's an absolute results of people wanting ProFTPD be removed from Slackware. I don't know when will it happened, but i guess i assume it will be removed in the next Slackware release (14.0).