Remove recently added but now defunct test.
Remove recently added but now defunct test.

Now LayerPlan::addLinesByOptimizer() is passed an arg to control whether the travel moves
take into account the combing distance or not, this test is defunct.

ROBO3D/CuraEngine,alephobjects/CuraEngine,ROBO3D/CuraEngine,alephobjects/CuraEngine,Ultimaker/CuraEngine,ROBO3D/CuraEngine,Ultimaker/CuraEngine,alephobjects/CuraEngine