code: def delete_classification_node(self, project, structure_group, path=None, reclassify_id=None):
          
          route_values = {}
          if project is not None:
              route_values['project'] = self._serialize.url('project', project, 'str')
          if structure_group is not None:
              route_values['structureGroup'] = self._serialize.url('structure_group', structure_group, 'TreeStructureGroup')
          if path is not None:
              route_values['path'] = self._serialize.url('path', path, 'str')
          query_parameters = {}
          if reclassify_id is not None:
              query_parameters['$reclassifyId'] = self._serialize.query('reclassify_id', reclassify_id, 'int')
          self._send(http_method='DELETE',
                     location_id='5a172953-1b41-49d3-840a-33f79c3ce89f',
                     version='5.0',
                     route_values=route_values,
                     query_parameters=query_parameters)
docs: DeleteClassificationNode.
          Delete an existing classification node.
          :param str project: Project ID or project name
          :param TreeStructureGroup structure_group: Structure group of the classification node, area or iteration.
          :param str path: Path of the classification node.
          :param int reclassify_id: Id of the target classification node for reclassification.