fix[litemall-db]: 删除多余的代码。

litemall-db/src/main/java/org/linlinjava/litemall/db/service/LitemallOrderGoodsService.java

@@ -25,7 +25,6 @@ public class LitemallOrderGoodsService {
     public List<LitemallOrderGoods> findByOidAndGid(Integer orderId, Integer goodsId) {
         LitemallOrderGoodsExample example = new LitemallOrderGoodsExample();
         example.or().andOrderIdEqualTo(orderId).andGoodsIdEqualTo(goodsId);
-        List<LitemallOrderGoods> orderGoodsList = orderGoodsMapper.selectByExample(example);
         return orderGoodsMapper.selectByExample(example);
     }