Notifications about long deceased Civilizations

[3 EMS]

One thing I've noticed is that I'll get notifications about civs that have been eliminated from the game.
Such as "Egypt has become friends with England." Where England has been wiped out. These are those between turn banner notices. I can't help but wonder if these are related to the substantial time it takes
between turns.
Build 1390931

 

[3 EMS]

Am I getting these notifications because I just now realized how to get rid of the notification icons on the right of my screen?