Don't remove Ireland, they ballance the isles - they have a neat faction symbol and intresting units.
Also they provide a nice challenge for a human player and are nice for when you don't want to be invaded left right and center, playing as them is peaceful
HOWEVER:
I agree that if they are staying their aggressive and diplomaticness needs to be improved massivley as they havn't even made an alliance or declared war (I have game them Angers to try and get them to mingle, but still nothing!) in my game at turn 100! >_>