staging: et131x: Remove unused rx_ring.recv_buffer_pool

rx_ring.recv_buffer_pool is unused, even in the original driver code.
Remove from stuct, and also remove some comments regarding it.

Signed-off-by: Mark Einon <mark.einon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/et131x/et131x.c

@@ -329,8 +329,6 @@ struct rx_ring {
 	struct rx_status_block *rx_status_block;
 	dma_addr_t rx_status_bus;
 
-	struct list_head recv_buff_pool;
-
 	/* RECV */
 	struct list_head recv_list;
 	u32 num_ready_recv;
@@ -2307,10 +2305,6 @@ void et131x_rx_dma_memory_free(struct et131x_adapter *adapter)
 		rx_ring->rx_status_block = NULL;
 	}
 
-	/* Free receive buffer pool */
-
-	/* Free receive packet pool */
-
 	/* Destroy the lookaside (RFD) pool */
 	if (adapter->flags & fMP_ADAPTER_RECV_LOOKASIDE) {
 		kmem_cache_destroy(rx_ring->recv_lookaside);