net: ethernet: Remove repeating expression

Identify issues that arise by using the tests/doublebitand.cocci
semantic patch. Need to remove duplicate expression in if statement.

Signed-off-by: Wang Ming <machel@vivo.com>
Reviewed-by: Jiawen Wu <jiawenwu@trustnetic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Author: Wang Ming

drivers/net/ethernet/wangxun/libwx/wx_hw.c

@@ -1511,7 +1511,6 @@ static void wx_configure_rx(struct wx *wx)
 	psrtype = WX_RDB_PL_CFG_L4HDR |
 		  WX_RDB_PL_CFG_L3HDR |
 		  WX_RDB_PL_CFG_L2HDR |
-		  WX_RDB_PL_CFG_TUN_TUNHDR |
 		  WX_RDB_PL_CFG_TUN_TUNHDR;
 	wr32(wx, WX_RDB_PL_CFG(0), psrtype);