I don't think it is that big of a deal, why waste money when you can keep it on there. It is not very noticeable anyways.
As Heather Graham said about her new movie which had the twin towers in it(came out after 9/11, but filmed before)
"Are we going to go through all of the films from the eighties and remove the twin towers?[of course not]"
Give me a break, I created this username when I was a kid...