staging: rtl8723au: core: rtw_ap: Remove useless intialisation

Remove intialisation of a variable that is immediately reassigned.

The semantic patch used to find this is:

// <smpl>
@@
type T;
identifier x;
constant C;
expression e;
@@

T x
- = C
 ;
x = e;
// </smpl>
Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723au/core/rtw_ap.c

@@ -403,7 +403,7 @@ void add_RATid23a(struct rtw_adapter *padapter, struct sta_info *psta, u8 rssi_l
 	init_rate = get_highest_rate_idx23a(tx_ra_bitmap&0x0fffffff)&0x3f;
 
 	if (psta->aid < NUM_STA) {
-		u8 arg = 0;
+		u8 arg;
 
 		arg = psta->mac_id&0x1f;
 
@@ -487,7 +487,7 @@ static void update_bmc_sta(struct rtw_adapter *padapter)
 		rtl8723a_SetHalODMVar(padapter, HAL_ODM_STA_INFO, psta, true);
 
 		{
-			u8 arg = 0;
+			u8 arg;
 
 			arg = psta->mac_id&0x1f;