igc: Remove unused phy type

_phy_none type not in use. Clean up the code accordingly,
and get rid of the unused enum line
Signed-off-by: NSasha Neftin <sasha.neftin@intel.com>
Reviewed-by: NPaul Menzel <pmenzel@molgen.mpg.de>
Tested-by: NNechama Kraus <nechamax.kraus@linux.intel.com>
Signed-off-by: NTony Nguyen <anthony.l.nguyen@intel.com>

drivers/net/ethernet/intel/igc/igc_hw.h

@@ -55,7 +55,6 @@ enum igc_mac_type {
 
 enum igc_phy_type {
 	igc_phy_unknown = 0,
-	igc_phy_none,
 	igc_phy_i225,
 };