stmmac: remove ethtool driver version info

I think there's no benefit in reporting a date from almost 6 yrs ago.
Let ethtool report the default (kernel version) instead.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/stmicro/stmmac/stmmac.h

@@ -10,7 +10,6 @@
 #define __STMMAC_H__
 
 #define STMMAC_RESOURCE_NAME   "stmmaceth"
-#define DRV_MODULE_VERSION	"Jan_2016"
 
 #include <linux/clk.h>
 #include <linux/hrtimer.h>

drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c

@@ -290,7 +290,6 @@ static void stmmac_ethtool_getdrvinfo(struct net_device *dev,
 		strlcpy(info->bus_info, pci_name(priv->plat->pdev),
 			sizeof(info->bus_info));
 	}
-	strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version));
 }
 
 static int stmmac_ethtool_get_link_ksettings(struct net_device *dev,