Gonna clean up some dead communities

A discussion here https://retrolemmy.com/comment/17259757 had me thinking about consolidating some dead communities.

!TheWalkingDeadGame@retrolemmy.com

• was deleted because there were no real posts, instead go to !adventuregames@retrolemmy.com

!retroarch@retrolemmy.com

• won't be deleted because it has posts in it, but we could make a pinned post to direct users to !emulation@sh.itjust.works

!sbcgaming@retrolemmy.com

• could either direct users to !emulation@sh.itjust.works or !retrogaming@lemmy.world

!retrostatus@retrolemmy.com

• could direct users to !retrogaming@lemmy.world