fix dock delete method

sample/src/main/java/com/dji/sample/manage/service/impl/DeviceServiceImpl.java

@@ -768,9 +768,9 @@ public class DeviceServiceImpl extends ServiceImpl<IDeviceMapper, DeviceEntity>
         LambdaQueryWrapper<DeviceEntity> queryWrapper = new LambdaQueryWrapper<>();
         queryWrapper.eq(DeviceEntity::getWorkspaceId, workspaceId);
         queryWrapper.eq(DeviceEntity::getId, id);
+        DeviceEntity dbDevice = this.getOne(queryWrapper);
 
-        int delete = this.mapper.delete(queryWrapper);
-        return delete > 0;
+        return deleteDevice(dbDevice.getDeviceSn());
     }
 
     @Override