[CentOS-mirror] Delist mirror

OSHS Limited kirjoitti 30.7.2019 klo 2.23:
> Hi,
> 
> We need to take mirror.econdc.com/centos 
> offline for some time.
> 
> Please delist for now and we'll get back to you when we're ready to get 
> re-added.

Hi, our mirror monitoring script has already detected that it's down and 
was automatically removed from the mirror list. Once it's back up again 
and everything's healthy it will get re-added again automagically.