SO - there is no news on this but I will put up my opinion:
1) It is unlikely they will remove it from either park.
2) At DHS - Star Wars land will be built in the same area that Star Tours is already located. There's a good chance they will keep it there - and likely will require some rethemeing of the exterior but I suspect it will stay.
3) At DLR - Star Wars land is NOT going in Toontown as some posters above stated (admittedly this was all before it was announced). However, it is going behind Frontierland/Critter Country - probably actually will be accessed through the back of Fantasyland. As such Star Tours won't be "moved". The cost of doing this would be silly. There's a good chance they will just leave it where it is for the time being.
4) It is possible that they close one of both of them. However, they are popular rides and easy to upgrade as shown by the 2.0 and recent Force Awakens add-ons. There's little doubt in my mind we will see them remain the place.