Remove debug include
Remove debug include

Because this include is at the top of the file, I didn't see it was still there. Sorry.

Contributes to issue CURA-2088.

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