code: def adapter_remove_nio_binding(self, adapter_number):
          
  
          try:
              adapter = self._ethernet_adapters[adapter_number]
          except IndexError:
              raise VMwareError("Adapter {adapter_number} doesn't exist on VMware VM '{name}'".format(name=self.name,
                                                                                                      adapter_number=adapter_number))
  
          nio = adapter.get_nio(0)
          if isinstance(nio, NIOUDP):
              self.manager.port_manager.release_udp_port(nio.lport, self._project)
          adapter.remove_nio(0)
          if self._started and self._ubridge_hypervisor:
              yield from self._delete_ubridge_connection(adapter_number)
  
          log.info("VMware VM '{name}' [{id}]: {nio} removed from adapter {adapter_number}".format(name=self.name,
                                                                                                   id=self.id,
                                                                                                   nio=nio,
                                                                                                   adapter_number=adapter_number))
  
          return nio
docs: Removes an adapter NIO binding.
  
          :param adapter_number: adapter number
  
          :returns: NIO instance