The jetway shouldn't be in the scenery, and it's normally not visible, because the GSX customization file we supply with KLAS has the "Parking has no jetway" option set for that parking.
However, since the scenery code has the jetway in (it shouldn't, it's a bug), if you customize the parking in GSX and enable the jetway, it will appear, so you must set it back to the default we ship the scenery with, which is "Parking has no jetway" AND Restart Couatl to apply the changes.
We'll update the scenery soon, since the jetways shouldn't be there in any case, and GSX too, so you won't have to Restart Couatl to see this kind of change applied too.
