remove unused code.

src/main/java/cn/quantgroup/xyqb/controller/external/UserController.java

@@ -905,7 +905,7 @@ public class UserController implements IBaseController {
 
     @RequestMapping(value = "/kdsp/loginRecord", method = RequestMethod.POST)
     public JsonResult loginRecord(@RequestParam(required = true) String deviceId) {
-        if (null == deviceId || "".equals(deviceId)) {
+        if (org.apache.commons.lang3.StringUtils.isEmpty(deviceId)) {
             return JsonResult.buildErrorStateResult("请传入正确的设备ID", null);
         }