delete: stop: unexposePorts code expects the daemon to be present

[cfergeau]

At the end of crc delete, crc calls unexposePorts, which expects the crc daemon API for port forwarding to be available. This is not the case with macadam, at this time we expect gvproxy to be there for this. But gvproxy does not expose the needed API on the host, see containers/gvisor-tap-vsock#425

This will need to be fixed for a fully functional crc delete.

[cfergeau]

After switching to gvproxy, we don't need to unexpose anything as gvproxy will not be running when the virtual machine is not running.
The unexpose code has been removed in the "macadam" branch.