util/logutil: Remove useless grpc log in production (#25454)

[ti-srebot]

cherry-pick #25454 to release-5.1
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# In tidb repo:
git pr https://github.com/pingcap/tidb/pull/27238

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git push git@github.com:ti-srebot/tidb.git pr/27238:release-5.1-ed88b54fc8a9

---

What problem does this PR solve?

There is a pr #23534, refactors the log code. It rewrites the initialization logic of the grpc logger, resulting in annoying grpc logs.

This pr remove those useless logs.

What is changed and how it works?

What's Changed:

Refactor the grpc logger initialization logic.

Related changes

#23534

• Need to cherry-pick to the release branch

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)

Release note

• No release note

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• qw4990
• zimulala

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[ti-chi-bot]

@ti-srebot: Adding the "do-not-merge/release-note-label-needed" label because no release-note block was detected, please follow our release note process to remove it.

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[ti-srebot]

/run-all-tests

[ti-srebot]

@SabaPing please accept the invitation then you can push to the cherry-pick pull requests.
https://github.com/ti-srebot/tidb/invitations

[zimulala]

LGTM

[zhouqiang-cl]

/merge

[ti-chi-bot]

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

Commit hash: 56afa35

[zhouqiang-cl]

/run-check_dev

[zhouqiang-cl]

/run-check_dev

[zhouqiang-cl]

/merge

[zhouqiang-cl]

/merge

[zhouqiang-cl]

/run-check_dev

[qw4990]

/merge

[zhouqiang-cl]

/merge

[zhouqiang-cl]

/merge

[ti-chi-bot]

@ti-srebot: Your PR was out of date, I have automatically updated it for you.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

If the CI test fails, you just re-trigger the test that failed and the bot will merge the PR for you after the CI passes.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the ti-community-infra/tichi repository.

[zhouqiang-cl]

/merge