As much as i heard, it isn't.
it was confirmed by an EL AL 777 pilot yesterday (but he also says that that is "as much as he knows")..
In the past, EL AL pilots could get free passes to the museum, and they can't no more, so it might imply it's not there anymore.
cockpit? it's that little room in the front of the plane where the pilots seat.. but that's not important now