Revert "Also invert nozzle offset when offsetting machine-specified disallowed areas"
Revert "Also invert nozzle offset when offsetting machine-specified disallowed areas"

This reverts commit 319559740dd8c8c2f9ffad637bee43cef9345073.

This was already fixed (line 734 inveted it). This code breaks it when there is no extruder

Curahelper/Cura,ynotstartups/Wanhao,fieldOfView/Cura,fieldOfView/Cura,Curahelper/Cura,ynotstartups/Wanhao