br: refactor phase 1 cleanup files

[BornChanger]

What problem does this PR solve?

Issue Number: close #41241

Problem Summary:

What changed and how does it work?

This PR is the phase 1 change of BR reorg. It removes some unnecessary files.

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

All modified and coverable lines are covered by tests ✅

Project coverage is 81.1400%. Comparing base (d18ee3f) to head (b13185e).
Report is 2187 commits behind head on master.

Additional details and impacted files

@@                Coverage Diff                @@
##             master     #49626         +/-   ##
=================================================
+ Coverage   70.9796%   81.1400%   +10.1603%     
=================================================
  Files          1368       2502       +1134     
  Lines        398769     727939     +329170     
=================================================
+ Hits         283045     590650     +307605     
- Misses        95948     115879      +19931     
- Partials      19776      21410       +1634     

Flag	Coverage Δ
integration	52.2021% <ø> (?)
unit	79.4265% <ø> (+8.4468%)	⬆️

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

Components	Coverage Δ
dumpling	73.6130% <ø> (+19.6466%)	⬆️
parser	∅ <ø> (∅)
br	67.5990% <ø> (+14.7168%)	⬆️

[BornChanger]

/cc @3pointer @YuJuncen @Leavrth

[BornChanger]

/cc @bb7133

[ti-chi-bot]

PR needs rebase.

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: YuJuncen

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• br/OWNERS [YuJuncen]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-04-29 04:22:49.681024414 +0000 UTC m=+244723.438159987: ☑️ agreed by YuJuncen.

[ti-chi-bot]

@BornChanger: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
idc-jenkins-ci-tidb/mysql-test	b13185e	link	true	/test mysql-test
pull-lightning-integration-test	b13185e	link	true	/test pull-lightning-integration-test
pull-br-integration-test	b13185e	link	true	/test pull-br-integration-test

Full PR test history. Your PR dashboard.

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[dveeden]

@BornChanger what is the status of this? should this be merged once the conflicts are fixed or should it be closed?