If you wish, but you won't really get the benefits if you leave any in. In reality, it not only needs all dihedral removed, it can actually benefit from anhedral, &/or cutting the cabin down, to lower the wing. This moves the center of pressure closer to the thrust line & center of mass, resulting in greatly improved roll response & dramatically reduced roll-coupling.

My most recent mod did both. It makes the plane look a bit funny, but it flies very well, although certainly not a beginner's plane.