Remove active machine preference from CuraApplication, it is now handled by MachineManager
Remove active machine preference from CuraApplication, it is now handled by MachineManager

hmflash/Cura,totalretribution/Cura,Curahelper/Cura,totalretribution/Cura,fxtentacle/Cura,ynotstartups/Wanhao,bq/Ultimaker-Cura,fieldOfView/Cura,ad1217/Cura,senttech/Cura,senttech/Cura,markwal/Cura,bq/Ultimaker-Cura,ad1217/Cura,fieldOfView/Cura,Curahelper/Cura,markwal/Cura,fxtentacle/Cura,hmflash/Cura,ynotstartups/Wanhao