planner: remove useless pointer receiver implementation.

[AilinKid]

What problem does this PR solve?

Issue Number: ref #51664, ref #52714

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 @AilinKid. Thanks for your PR.

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[AilinKid]

/ok-to-test

[zimulala]

LGTM

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hawkingrei, zimulala

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-08-08 06:03:14.163727805 +0000 UTC m=+504724.030826892: ☑️ agreed by hawkingrei.
• 2024-08-08 06:08:53.873187994 +0000 UTC m=+505063.740287076: ☑️ agreed by zimulala.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.

Project coverage is 66.2446%. Comparing base (3117d3f) to head (422101c).
Report is 11 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #55292        +/-   ##
================================================
- Coverage   74.7769%   66.2446%   -8.5323%     
================================================
  Files          1572       1573         +1     
  Lines        364757     437332     +72575     
================================================
+ Hits         272754     289709     +16955     
- Misses        72233     127633     +55400     
- Partials      19770      19990       +220     

Flag	Coverage Δ
integration	23.9883% <0.0000%> (?)

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

Components	Coverage Δ
dumpling	55.1894% <ø> (ø)
parser	∅ <ø> (∅)
br	39.9892% <ø> (-7.6813%)	⬇️