staging: rtl8723au: Remove redundant casting in rtw_wlan_util.c

Casting value returned by k[cmz]alloc is useless.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723au/core/rtw_wlan_util.c

@@ -919,8 +919,7 @@ int rtw_check_bcn_info23a(struct rtw_adapter *Adapter,
 		return true;
 	}
 
-	bssid = (struct wlan_bssid_ex *)kzalloc(sizeof(struct wlan_bssid_ex),
-						GFP_ATOMIC);
+	bssid = kzalloc(sizeof(struct wlan_bssid_ex), GFP_ATOMIC);
 	if (!bssid)
 		return _FAIL;