staging: rtl8188eu: Remove 'spinlock_t recvbuf_lock' from struct recv_buf

recvbuf_lock is initialized inside rtl8188eu_init_recv_priv() but never used.
Signed-off-by: navin patidar <navin.patidar@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/hal/rtl8188eu_recv.c

@@ -71,7 +71,6 @@ int	rtl8188eu_init_recv_priv(struct adapter *padapter)
 	precvbuf = (struct recv_buf *)precvpriv->precv_buf;
 
 	for (i = 0; i < NR_RECVBUFF; i++) {
-		spin_lock_init(&precvbuf->recvbuf_lock);
 		precvbuf->alloc_sz = MAX_RECVBUF_SZ;
 		res = rtw_os_recvbuf_resource_alloc(padapter, precvbuf);
 		if (res == _FAIL)

drivers/staging/rtl8188eu/include/rtw_recv.h

@@ -235,7 +235,6 @@ struct sta_recv_priv {
 };
 
 struct recv_buf {
-	spinlock_t recvbuf_lock;
 	u32	ref_cnt;
 	struct adapter *adapter;
 	u8	*pbuf;