code: def delete_port(self, port_name):
          
          command = ovs_vsctl.VSCtlCommand(
              'del-port', (self.br_name, port_name), '--if-exists')
          self.run_command([command])
docs: Deletes a port on the OVS instance.
  
          This method is corresponding to the following ovs-vsctl command::
  
              $ ovs-vsctl --if-exists del-port <bridge> <port>