staging: rtl8188eu: Remove "last_tx_time" from struct sreset_priv

value stored in variable last_tx_time isn't being used
by driver.
Signed-off-by: navin patidar <navin.patidar@gmail.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/core/rtw_sreset.c

@@ -26,7 +26,6 @@ void sreset_init_value(struct adapter *padapter)
 	struct sreset_priv *psrtpriv = &pHalData->srestpriv;
 
 	psrtpriv->Wifi_Error_Status = WIFI_STATUS_SUCCESS;
-	psrtpriv->last_tx_time = 0;
 	psrtpriv->last_tx_complete_time = 0;
 }
 

drivers/staging/rtl8188eu/include/rtw_sreset.h

@@ -25,7 +25,6 @@
 
 struct sreset_priv {
 	u8	Wifi_Error_Status;
-	unsigned long last_tx_time;
 	unsigned long last_tx_complete_time;
 };
 

drivers/staging/rtl8188eu/os_dep/usb_ops_linux.c

@@ -216,11 +216,7 @@ u32 usb_write_port(struct intf_hdl *pintfhdl, u32 addr, u32 cnt, u8 *wmem)
 			  pxmitbuf);/* context is pxmitbuf */
 
 	status = usb_submit_urb(purb, GFP_ATOMIC);
-	if (!status) {
-		struct hal_data_8188e	*haldata = GET_HAL_DATA(padapter);
-
-		haldata->srestpriv.last_tx_time = jiffies;
-	} else {
+	if (status) {
 		rtw_sctx_done_err(&pxmitbuf->sctx, RTW_SCTX_DONE_WRITE_PORT_ERR);
 		DBG_88E("usb_write_port, status =%d\n", status);
 		RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("usb_write_port(): usb_submit_urb, status =%x\n", status));