planner: Remove CloneForPlanCache method

[qw4990]

What problem does this PR solve?

Issue Number: ref #54057

Problem Summary: planner: Remove CloneForPlanCache method

What changed and how does it work?

planner: Remove CloneForPlanCache method

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 @qw4990. Thanks for your PR.

PRs from untrusted users cannot be marked as trusted with /ok-to-test in this repo meaning untrusted PR authors can never trigger tests themselves. Collaborators can still trigger tests on the PR using /test all.

I understand the commands that are listed here.

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 kubernetes-sigs/prow repository.

[AilinKid]

rest LGTM

[codecov]

Codecov Report

Attention: Patch coverage is 75.89286% with 27 lines in your changes missing coverage. Please review.

Project coverage is 55.9339%. Comparing base (d8098b9) to head (b5cba75).
Report is 6 commits behind head on master.

Additional details and impacted files

@@                Coverage Diff                @@
##             master     #54528         +/-   ##
=================================================
- Coverage   72.8280%   55.9339%   -16.8941%     
=================================================
  Files          1546       1667        +121     
  Lines        436236     609272     +173036     
=================================================
+ Hits         317702     340790      +23088     
- Misses        98945     245219     +146274     
- Partials      19589      23263       +3674     

Flag	Coverage Δ
integration	36.9811% <39.2857%> (?)
unit	71.7469% <75.8928%> (-0.1022%)	⬇️

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

Components	Coverage Δ
dumpling	52.9656% <ø> (ø)
parser	∅ <ø> (∅)
br	52.6308% <ø> (+6.7466%)	⬆️

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [AilinKid,hawkingrei]
• pkg/planner/OWNERS [AilinKid,hawkingrei]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-07-09 10:31:36.129021408 +0000 UTC m=+353593.364255518: ☑️ agreed by AilinKid.
• 2024-07-09 14:29:58.239845619 +0000 UTC m=+367895.475079732: ☑️ agreed by hawkingrei.