net: pcmcia/axnet_cs: includecheck fix axnet_cs.c

fix the following 'make includecheck' warning:

  drivers/net/pcmcia/axnet_cs.c: linux/etherdevice.h is included more than once.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/pcmcia/axnet_cs.c

@@ -893,8 +893,6 @@ static const char version_8390[] = KERN_INFO \
 #include <linux/in.h>
 #include <linux/interrupt.h>
 
-#include <linux/etherdevice.h>
-
 #define BUG_83C690
 
 /* These are the operational function interfaces to board-specific