Why was Maradona left in EFOOTBALL (PES) but taken out of EA FC

You are not going to like this answer, but good riddance I say, one cheater less hailed as some sort of super hero (obviously I am talking about him being removed from FC, not him passing away in real life).

As for a more objective answer: I think EA has a policy for FIFA/FC where they remove players who pass away...but then I wonder about some of the older ICON players in FUT to be honest.