code: def removeVariantSet(self, variantSet):
          
          for variantSetRecord in models.Variantset.select().where(
                          models.Variantset.id == variantSet.getId()):
              variantSetRecord.delete_instance(recursive=True)
docs: Removes the specified variantSet from this repository. This performs
          a cascading removal of all items within this variantSet.