[IPV4]: Remove unused define in include/net/arp.h (HAVE_ARP_CREATE)

Signed-off-by: Rami Rosen <ramirose@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/arp.h

@@ -5,7 +5,6 @@
 #include <linux/if_arp.h>
 #include <net/neighbour.h>
 
-#define HAVE_ARP_CREATE
 
 extern struct neigh_table arp_tbl;