openvswitch: fix duplicate #include headers

The #include headers net/genetlink.h and linux/genetlink.h both were
included twice, so delete each of the duplicate.
Signed-off-by: NJean Sacren <sakiwit@gmail.com>
Cc: Pravin Shelar <pshelar@nicira.com>
Cc: dev@openvswitch.org
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/openvswitch/datapath.c

@@ -47,8 +47,6 @@
 #include <linux/openvswitch.h>
 #include <linux/rculist.h>
 #include <linux/dmi.h>
-#include <linux/genetlink.h>
-#include <net/genetlink.h>
 #include <net/genetlink.h>
 #include <net/net_namespace.h>
 #include <net/netns/generic.h>