external: remove old compatibility check of BR

[lance6716]

What problem does this PR solve?

Issue Number: close #50533

Problem Summary:

What changed and how does it work?

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

[tiprow]

Hi @lance6716. Thanks for your PR.

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[codecov]

Codecov Report

Merging #50534 (33d9568) into master (9b4cf39) will decrease coverage by 16.5240%.
Report is 2 commits behind head on master.
The diff coverage is n/a.

Additional details and impacted files

@@                Coverage Diff                @@
##             master     #50534         +/-   ##
=================================================
- Coverage   72.1075%   55.5835%   -16.5240%     
=================================================
  Files          1452       1563        +111     
  Lines        347481     587825     +240344     
=================================================
+ Hits         250560     326734      +76174     
- Misses        76609     238281     +161672     
- Partials      20312      22810       +2498     

Flag	Coverage Δ
integration	36.7453% <ø> (?)
unit	70.2198% <ø> (-1.8877%)	⬇️

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

Components	Coverage Δ
dumpling	54.0269% <ø> (-2.2860%)	⬇️
parser	∅ <ø> (∅)
br	56.5561% <ø> (+4.3630%)	⬆️

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-01-18 03:28:21.209066099 +0000 UTC m=+412942.773363804: ☑️ agreed by ywqzzy.
• 2024-01-18 03:32:16.209541933 +0000 UTC m=+413177.773839638: ☑️ agreed by D3Hunter.

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: 3pointer, D3Hunter, ywqzzy

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• br/OWNERS [3pointer]

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[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.6: #50537.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.1: #51338.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.5: #51339.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.5: #51340.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.1: #51341.