igc: Remove unused FUNC_1 mask

FUNC_1 mask not in use in i225 device and could be removed
Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

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

@@ -179,7 +179,6 @@
 #define IGC_STATUS_LU		0x00000002      /* Link up.0=no,1=link */
 #define IGC_STATUS_FUNC_MASK	0x0000000C      /* PCI Function Mask */
 #define IGC_STATUS_FUNC_SHIFT	2
-#define IGC_STATUS_FUNC_1	0x00000004      /* Function 1 */
 #define IGC_STATUS_TXOFF	0x00000010      /* transmission paused */
 #define IGC_STATUS_SPEED_100	0x00000040      /* Speed 100Mb/s */
 #define IGC_STATUS_SPEED_1000	0x00000080      /* Speed 1000Mb/s */