net: tehuti: remove redundant pointer skb

Pointer skb is being assigned but is never used hence it is
redundant and can be removed.

Cleans up clang warning:
warning: variable 'skb' set but not used [-Wunused-but-set-variable]
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/tehuti/tehuti.c

@@ -1151,7 +1151,6 @@ static void bdx_recycle_skb(struct bdx_priv *priv, struct rxd_desc *rxdd)
 	struct rx_map *dm;
 	struct rxf_fifo *f;
 	struct rxdb *db;
-	struct sk_buff *skb;
 	int delta;
 
 	ENTER;
@@ -1161,7 +1160,6 @@ static void bdx_recycle_skb(struct bdx_priv *priv, struct rxd_desc *rxdd)
 	DBG("db=%p f=%p\n", db, f);
 	dm = bdx_rxdb_addr_elem(db, rxdd->va_lo);
 	DBG("dm=%p\n", dm);
-	skb = dm->skb;
 	rxfd = (struct rxf_desc *)(f->m.va + f->m.wptr);
 	rxfd->info = CPU_CHIP_SWAP32(0x10003);	/* INFO=1 BC=3 */
 	rxfd->va_lo = rxdd->va_lo;