[CI] Remove find-comments helper

[codecov-commenter]

Codecov Report

All modified lines are covered by tests :white_check_mark:

Comparison is base (f41b255) 58.68% compared to head (136e359) 58.68%. Report is 1 commits behind head on main.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #146 +/- ## ======================================= Coverage 58.68% 58.68% ======================================= Files 185 185 Lines 11608 11608 ======================================= Hits 6812 6812 Misses 4796 4796 ``` | [Flag](https://app.codecov.io/gh/openxrlab/xrmocap/pull/146/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=openxrlab) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/openxrlab/xrmocap/pull/146/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=openxrlab) | `58.68% <ø> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=openxrlab#carryforward-flags-in-the-pull-request-comment) to find out more.

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