xbt_lib_unset(host_lib, name, SURF_HOST_LEVEL, 0);
/* TODO: comment out when VM storage is implemented. */
// xbt_lib_unset(host_lib, name, SURF_STORAGE_LEVEL, 0);
delete vm;
xbt_lib_unset(host_lib, name, SURF_HOST_LEVEL, 0);
/* TODO: comment out when VM storage is implemented. */
// xbt_lib_unset(host_lib, name, SURF_STORAGE_LEVEL, 0);
delete vm;