domon,statistics: remove useless code for sync load

[hawkingrei]

What problem does this PR solve?

Issue Number: close #xxx

Problem Summary:

What changed and how does it work?

this code is only written, not read. so it is useless.

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No need to test

  • I checked and no code files have been changed.

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[codecov]

Codecov Report

Merging #52358 (34292b0) into master (bdffd30) will increase coverage by 2.2376%.
Report is 3 commits behind head on master.
The diff coverage is 100.0000%.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #52358        +/-   ##
================================================
+ Coverage   72.1545%   74.3921%   +2.2376%     
================================================
  Files          1467       1467                
  Lines        426755     427302       +547     
================================================
+ Hits         307923     317879      +9956     
+ Misses        99637      89579     -10058     
- Partials      19195      19844       +649     

Flag	Coverage Δ
integration	48.9403% <100.0000%> (?)
unit	71.0432% <100.0000%> (+0.0025%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
dumpling	53.9957% <ø> (ø)
parser	∅ <ø> (∅)
br	49.5815% <ø> (+8.6988%)	⬆️

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hi-rustin, zimulala

The full list of commands accepted by this bot can be found here.

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Needs approval from an approver in each of these files:

• OWNERS [hi-rustin,zimulala]
• pkg/domain/OWNERS [zimulala]

Approvers can indicate their approval by writing /approve in a comment
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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-04-07 05:16:35.682250172 +0000 UTC m=+766657.209790716: ☑️ agreed by hi-rustin.
• 2024-04-07 06:15:22.269844093 +0000 UTC m=+770183.797384631: ☑️ agreed by zimulala.

[hawkingrei]

/retest