mac802154: fix duplicate #include headers

The commit e6278d92 ("mac802154: use header operations to
create/parse headers") included the header

		net/ieee802154_netdev.h

which had been included by the commit b70ab2e8 ("ieee802154:
enforce consistent endianness in the 802.15.4 stack"). Fix this
duplicate #include by deleting the latter one as the required header
has already been in place.
Signed-off-by: NJean Sacren <sakiwit@gmail.com>
Cc: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Cc: linux-zigbee-devel@lists.sourceforge.net
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/mac802154/mib.c

@@ -26,7 +26,6 @@
 #include <net/mac802154.h>
 #include <net/ieee802154_netdev.h>
 #include <net/wpan-phy.h>
-#include <net/ieee802154_netdev.h>
 
 #include "mac802154.h"