enhance: Remove l0 delete cache

[xiaofan-luan]

fix #32979
remove l0 cache and build delete pk and ts everytime. this reduce the memory and also increase the code readability

[mergify]

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@xiaofan-luan E2e jenkins job failed, comment /run-cpu-e2e can trigger the job again.

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@xiaofan-luan ut workflow job failed, comment rerun ut can trigger the job again.

[codecov]

Codecov Report

Attention: Patch coverage is 96.15385% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 82.15%. Comparing base (c6e2dd0) to head (138a410).
Report is 28 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #32990      +/-   ##
==========================================
- Coverage   82.19%   82.15%   -0.05%     
==========================================
  Files        1009     1009              
  Lines      128922   128797     -125     
==========================================
- Hits       105970   105815     -155     
- Misses      18963    18975      +12     
- Partials     3989     4007      +18     

Files	Coverage Δ
internal/querynodev2/delegator/delegator.go	87.03% <ø> (+0.35%)	⬆️
internal/querynodev2/delegator/delegator_data.go	82.89% <96.15%> (-1.91%)	⬇️

... and 56 files with indirect coverage changes

[congqixia]

/lgtm

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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