Revert "OWNERS: Auto Sync OWNERS files from community membership"

[kaaaaaaang]

Reverts pingcap/tiup#2263

[ti-chi-bot[bot]]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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Needs approval from an approver in each of these files: - **[OWNERS](https://github.com/pingcap/tiup/blob/master/OWNERS)** Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[codecov-commenter]

Codecov Report

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

Comparison is base (ef3382f) 50.29% compared to head (2615de1) 48.91%. Report is 1 commits behind head on master.

:exclamation: Current head 2615de1 differs from pull request most recent head 9e5bc86. Consider uploading reports for the commit 9e5bc86 to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #2308 +/- ## ========================================== - Coverage 50.29% 48.91% -1.38% ========================================== Files 324 325 +1 Lines 34693 34704 +11 ========================================== - Hits 17446 16972 -474 - Misses 14962 15671 +709 + Partials 2285 2061 -224 ``` | [Flag](https://app.codecov.io/gh/pingcap/tiup/pull/2308/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=pingcap) | Coverage Δ | | |---|---|---| | [cluster](https://app.codecov.io/gh/pingcap/tiup/pull/2308/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=pingcap) | `34.42% <ø> (-10.40%)` | :arrow_down: | | [dm](https://app.codecov.io/gh/pingcap/tiup/pull/2308/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=pingcap) | `25.26% <ø> (-0.21%)` | :arrow_down: | | [tiup](https://app.codecov.io/gh/pingcap/tiup/pull/2308/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=pingcap) | `15.56% <ø> (ø)` | | | [unittest](https://app.codecov.io/gh/pingcap/tiup/pull/2308/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=pingcap) | `22.33% <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=pingcap#carryforward-flags-in-the-pull-request-comment) to find out more. [see 124 files with indirect coverage changes](https://app.codecov.io/gh/pingcap/tiup/pull/2308/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=pingcap)

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