[CentOS-mirror] remove ftp.upcnet.ro from mirrorlist

Gergely, Imre kirjoitti 16.1.2018 klo 15.52:
> 
> Hi
> 
> As we have some hardware issues, please remove ftp.upcnet.ro from the mirror list for the time being. I will reply to this thread when it's back up again.

Hi, the mirror has now been marked disabled. Let us know when it's 
available again and we'll re-enable the entry.