Can I hack my gcode using voxelizer?


I love that I can import gcode.
What Id then like to do is cut a shape out of the code by filtering the extrusion to zero within said shape. Then export the gcode otherwise untouched.
Every app and slicer I can find works in manifold bodies - I dont care about that I want to control the printer to not extrude in areas I select, preferably with an imported file.
Is it possible with Voxelizer? Or with something else? This would be really good for lightening single shell RC models.