ice: Remove ndo_get_phys_port_name

ndo_get_phys_port_name is never actually used, as in switchdev
devlink is always being created.

Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Signed-off-by: Dariusz Aftanski <dariusz.aftanski@linux.intel.com>
Tested-by: Sujai Buvaneswaran <sujai.buvaneswaran@intel.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>