Remove robustness presubmits for amd64 arch

[ArkaSaha30]

This PR will remove robustness presubmits for both amd64 and arm64 archs, periodics for amd64 arch since it has been migrated to kubernetes/test-infra as prowjobs:

• https://github.com/kubernetes/test-infra/blob/master/config/jobs/etcd/etcd-periodics.yaml#L61-L230
• https://github.com/kubernetes/test-infra/blob/master/config/jobs/etcd/etcd-presubmits.yaml#L240-L279

Issue link: #18136

Please read https://github.com/etcd-io/etcd/blob/main/CONTRIBUTING.md#contribution-flow.

[k8s-ci-robot]

Hi @ArkaSaha30. Thanks for your PR.

I'm waiting for a etcd-io member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[ArkaSaha30]

cc @ivanvc @serathius

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 68.78%. Comparing base (3be7dbe) to head (2702314).
Report is 4 commits behind head on main.

❗ Current head 2702314 differs from pull request most recent head 6ca3b6b

Please upload reports for the commit 6ca3b6b to get more accurate results.

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Additional details and impacted files

Files	Coverage Δ
server/storage/wal/metrics.go	100.00% <100.00%> (ø)

... and 24 files with indirect coverage changes

@@            Coverage Diff             @@
##             main   #18177      +/-   ##
==========================================
- Coverage   68.84%   68.78%   -0.06%     
==========================================
  Files         416      416              
  Lines       35127    35128       +1     
==========================================
- Hits        24183    24164      -19     
- Misses       9547     9560      +13     
- Partials     1397     1404       +7     

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[ivanvc]

/retest

[ivanvc]

LGTM. Thanks, @ArkaSaha30.

[ivanvc]

/ok-to-test