staging: rtl8723bs: hal: hal_btcoex.c: Remove variables

Remove variables and use the values directly.
Issue found with Coccinelle.
Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723bs/hal/hal_btcoex.c

@@ -362,15 +362,9 @@ static u32 halbtcoutsrc_GetBtPatchVer(PBTC_COEXIST pBtCoexist)
 
 static s32 halbtcoutsrc_GetWifiRssi(struct adapter *padapter)
 {
-	struct hal_com_data *pHalData;
-	s32 UndecoratedSmoothedPWDB = 0;
-
-
-	pHalData = GET_HAL_DATA(padapter);
-
-	UndecoratedSmoothedPWDB = pHalData->dmpriv.EntryMinUndecoratedSmoothedPWDB;
+	struct hal_com_data *pHalData = GET_HAL_DATA(padapter);
 
-	return UndecoratedSmoothedPWDB;
+	return pHalData->dmpriv.EntryMinUndecoratedSmoothedPWDB;
 }
 
 static u8 halbtcoutsrc_GetWifiScanAPNum(struct adapter *padapter)