cleanup 5 years old package

[JacksonTian]

You need to complete

• [ ] unit tests and/or feature tests
• [ ] documentation is changed or added

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 95.93%. Comparing base (95a122d) to head (3b91699).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #527 +/- ## ======================================= Coverage 95.93% 95.93% ======================================= Files 45 45 Lines 1918 1918 Branches 276 276 ======================================= Hits 1840 1840 Misses 56 56 Partials 22 22 ```

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[JacksonTian]

报错应该无关。