octeontx2-af: Remove duplicate include

The include is in line 14 and 23. Remove the duplicate.

Fix following checkincludes warning:

./drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.c: linux/bitfield.h is included more than once.
./drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.c: rvu_npc_hash.h is included more than once.
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.c

@@ -11,14 +11,12 @@
 #include <linux/firmware.h>
 #include <linux/stddef.h>
 #include <linux/debugfs.h>
-#include <linux/bitfield.h>
 
 #include "rvu_struct.h"
 #include "rvu_reg.h"
 #include "rvu.h"
 #include "npc.h"
 #include "cgx.h"
-#include "rvu_npc_hash.h"
 #include "rvu_npc_fs.h"
 #include "rvu_npc_hash.h"