koordlet: remove deprecated executor package

[novahe]

Ⅰ. Describe what this PR does

Ⅱ. Does this pull request fix one issue?

fix: #971

Ⅲ. Describe how to verify it

Ⅳ. Special notes for reviews

V. Checklist

• I have written necessary docs and comments
• I have added necessary unit tests and integration tests
• All checks passed in make test

[codecov]

Codecov Report

Base: 66.99% // Head: 67.47% // Increases project coverage by +0.47% 🎉

Coverage data is based on head (1c002de) compared to base (1e3fa53).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #986      +/-   ##
==========================================
+ Coverage   66.99%   67.47%   +0.47%     
==========================================
  Files         244      241       -3     
  Lines       28330    27988     -342     
==========================================
- Hits        18981    18886      -95     
+ Misses       8049     7801     -248     
- Partials     1300     1301       +1     

Flag	Coverage Δ
unittests	67.47% <ø> (+0.47%)	⬆️

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

Impacted Files	Coverage Δ
pkg/scheduler/plugins/coscheduling/core/gang.go	75.15% <0.00%> (-0.93%)	⬇️
pkg/util/httputil/reverseproxy.go	85.10% <0.00%> (+0.26%)	⬆️

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[saintube]

/cc @Re-Grh

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[Re-Grh]

/lgtm

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/lgtm

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[saintube]

/lgtm

[hormes]

/approve

[koordinator-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hormes

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