staging: rtl8188eu: Remove 'int transfer_len' from struct recv_buf

Driver is not making any use of value stored in this variable.
Signed-off-by: Nnavin patidar <navin.patidar@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/hal/rtl8188eu_recv.c

@@ -30,8 +30,6 @@
 
 void rtl8188eu_init_recvbuf(struct adapter *padapter, struct recv_buf *precvbuf)
 {
-	precvbuf->transfer_len = 0;
-
 	precvbuf->len = 0;
 
 	precvbuf->ref_cnt = 0;

drivers/staging/rtl8188eu/hal/usb_ops_linux.c

@@ -518,7 +518,6 @@ static void usb_read_port_complete(struct urb *purb, struct pt_regs *regs)
 		} else {
 			rtw_reset_continual_urb_error(adapter_to_dvobj(adapt));
 
-			precvbuf->transfer_len = purb->actual_length;
 			skb_put(precvbuf->pskb, purb->actual_length);
 			skb_queue_tail(&precvpriv->rx_skb_queue, precvbuf->pskb);
 

drivers/staging/rtl8188eu/include/rtw_recv.h

@@ -247,7 +247,6 @@ struct recv_buf {
 	struct urb *purb;
 	u32 alloc_sz;
 	u8  irp_pending;
-	int  transfer_len;
 	struct sk_buff *pskb;
 	u8	reuse;
 };

drivers/staging/rtl8188eu/os_dep/recv_linux.c

@@ -67,7 +67,6 @@ int rtw_os_recvbuf_resource_alloc(struct adapter *padapter,
 	precvbuf->phead = NULL;
 	precvbuf->ptail = NULL;
 	precvbuf->pend = NULL;
-	precvbuf->transfer_len = 0;
 	precvbuf->len = 0;
 	return res;
 }