net: tlan: don't set unused function argument

We get a warning for tlan_handle_tx_eoc when building with "make W=1"

drivers/net/ethernet/ti/tlan.c: In function 'tlan_handle_tx_eoc':
drivers/net/ethernet/ti/tlan.c:1647:59: error: parameter 'host_int' set but not used [-Werror=unused-but-set-parameter]
 static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int)

This is harmless, but removing the unused assignment lets us avoid
the warning with no downside.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/ti/tlan.c

@@ -1651,7 +1651,6 @@ static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int)
 	dma_addr_t		head_list_phys;
 	u32			ack = 1;
 
-	host_int = 0;
 	if (priv->tlan_rev < 0x30) {
 		TLAN_DBG(TLAN_DEBUG_TX,
 			 "TRANSMIT:  handling TX EOC (Head=%d Tail=%d) -- IRQ\n",