Build system relying on patched version of Slicer's vtkAddon

### Comment:

Remove [ 0002-vtkAddon-temp-fix.patch](https://github.com/conda-forge/vmtk-feedstock/blob/main/recipe/0002-vtkAddon-temp-fix.patch) once the vtkAddon repository has been updated (https://github.com/Slicer/vtkAddon/pull/27)