code: def remove(self, element):
          
          if self.level == 'interface':
              len_before_change = len(self)
              _nodes = []
              for network in self:
                  if from_meta(network) != element:
                      _nodes.append(network.data)
                  else:
                      if network.autogenerated: # Make sure it was user added
                          _nodes.append(network.data)
              if len(_nodes) != len_before_change:
                  self.data['antispoofing_node'] = _nodes
                  self.update()
                  return True
          return False
docs: Remove a specific user added element from the antispoofing tables of
          a given interface. This will not remove autogenerated or system level
          entries.
          
          :param Element element: element to remove
          :return: remove element if it exists and return bool
          :rtype: bool