ATM: Delete no use FILL_RX_POOLS_IN_BH marco

The macro FILL_RX_POOLS_IN_BH is never been used, in order to avoid
the compiler reports error because of the usage of function INIT_WORK,
we just delete the marco.

Cc: Chas Williams <chas@cmf.nrl.navy.mil>
Cc: linux-atm-general@lists.sourceforge.net
Signed-off-by: Wang Shaoyan <wangshaoyan.pt@taobao.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/atm/ambassador.c

@@ -813,7 +813,7 @@ static void fill_rx_pool (amb_dev * dev, unsigned char pool,
   return;
 }
 
-// top up all RX pools (can also be called as a bottom half)
+// top up all RX pools
 static void fill_rx_pools (amb_dev * dev) {
   unsigned char pool;
 
@@ -872,11 +872,7 @@ static irqreturn_t interrupt_handler(int irq, void *dev_id) {
       ++irq_work;
 
     if (irq_work) {
-#ifdef FILL_RX_POOLS_IN_BH
-      schedule_work (&dev->bh);
-#else
       fill_rx_pools (dev);
-#endif
 
       PRINTD (DBG_IRQ, "work done: %u", irq_work);
     } else {
@@ -2154,11 +2150,6 @@ static void setup_dev(amb_dev *dev, struct pci_dev *pci_dev)
       dev->tx_avail = ATM_OC3_PCR;
       dev->rx_avail = ATM_OC3_PCR;
 
-#ifdef FILL_RX_POOLS_IN_BH
-      // initialise bottom half
-      INIT_WORK(&dev->bh, (void (*)(void *)) fill_rx_pools, dev);
-#endif
-
       // semaphore for txer/rxer modifications - we cannot use a
       // spinlock as the critical region needs to switch processes
       mutex_init(&dev->vcc_sf);

drivers/atm/ambassador.h

@@ -630,10 +630,6 @@ struct amb_dev {
   u32              iobase;
   u32 *            membase;
 
-#ifdef FILL_RX_POOLS_IN_BH
-  struct work_struct bh;
-#endif
-
   amb_cq           cq;
   amb_txq          txq;
   amb_rxq          rxq[NUM_RX_POOLS];