staging: rtl8723bs: os_dep: remove two set but not used variables

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/staging/rtl8723bs//os_dep/osdep_service.c: In function 'rtw_buf_free':
drivers/staging/rtl8723bs//os_dep/osdep_service.c:321:6: warning:
 variable 'ori_len' set but not used [-Wunused-but-set-variable]
drivers/staging/rtl8723bs//os_dep/ioctl_linux.c: In function 'rtw_ioctl_wext_private':
drivers/staging/rtl8723bs//os_dep/ioctl_linux.c:4915:6: warning:
 variable 'num_priv' set but not used [-Wunused-but-set-variable]
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Link: https://lore.kernel.org/r/20190726140959.15008-1-yuehaibing@huawei.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723bs/os_dep/ioctl_linux.c

@@ -4912,7 +4912,6 @@ static int rtw_ioctl_wext_private(struct net_device *dev, union iwreq_data *wrq_
 	s32 k;
 	const iw_handler *priv;		/* Private ioctl */
 	const struct iw_priv_args *priv_args;	/* Private ioctl description */
-	u32 num_priv;				/* Number of ioctl */
 	u32 num_priv_args;			/* Number of descriptions */
 	iw_handler handler;
 	int temp;
@@ -4948,7 +4947,6 @@ static int rtw_ioctl_wext_private(struct net_device *dev, union iwreq_data *wrq_
 
 	priv = rtw_private_handler;
 	priv_args = rtw_private_args;
-	num_priv = ARRAY_SIZE(rtw_private_handler);
 	num_priv_args = ARRAY_SIZE(rtw_private_args);
 
 	if (num_priv_args == 0) {

drivers/staging/rtl8723bs/os_dep/osdep_service.c

@@ -318,13 +318,9 @@ int rtw_change_ifname(struct adapter *padapter, const char *ifname)
 
 void rtw_buf_free(u8 **buf, u32 *buf_len)
 {
-	u32 ori_len;
-
 	if (!buf || !buf_len)
 		return;
 
-	ori_len = *buf_len;
-
 	if (*buf) {
 		*buf_len = 0;
 		kfree(*buf);