config: remove async commit configs from example

[sticnarf]

What is changed and how it works?

We don't expect to expose any async-commit configurations to the user. But we still keep these configurations in TiDB, so they can be modified by advanced users.

Related changes

• PR to update pingcap/docs/pingcap/docs-cn: update async commit related documentations docs-cn#5607

Check List

Tests

• No code

Release note

• No release note.

[youjiali1995]

/LGTM

[AndreMouche]

LGTM

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[youjiali1995]

/LGTM

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[youjiali1995]

/LGTM

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This pull request has been approved by:

• AndreMouche
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[youjiali1995]

/merge

[ti-chi-bot]

@youjiali1995: It seems you want to merge this PR, I will help you trigger all the tests:

/run-all-tests

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[ti-chi-bot]

This pull request has been accepted and is ready to merge.

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Commit hash: b11996b

[sticnarf]

/run-all-tests

[0xPoe]

@ti-chi-bot update this pr branch

[ti-chi-bot]

@sticnarf: Your PR was out of date, I have automatically updated it for you.

At the same time I will also trigger all tests for you:

/run-all-tests

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[0xPoe]

/run-tics-test