Remove Amazon Linux 2 and Mariner 2 support from CI

[alonre24]

Summary

Amazon Linux 2 and CBL-Mariner 2 are no longer supported platforms, so this removes them from CI.

• Deleted the amazon2.yml and mariner2.yml workflow definitions.
• Removed the mariner2 job and the (commented-out) amazonlinux2 job, plus their dependency references, from event-nightly.yml and event-merge-to-queue.yml.
• Removed the commented-out amazonlinux2 and mariner2 test blocks from flow-temp.yml.

The amazonaws.com S3 URLs under tests/benchmark/data/ are unrelated data-download links and were left untouched.

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Cursor Bugbot has reviewed your changes using default effort and found 1 potential issue.

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[cursor]

Mariner CI removed unintentionally

Medium Severity

This PR is scoped to dropping Amazon Linux 2, but it also deletes the active mariner2 job, removes mariner2 from aggregate needs lists, and removes .github/workflows/mariner2.yml. Mariner was still running in merge-queue and nightly CI, unlike the already-commented amazonlinux2 blocks. .install/common_base_linux_mariner_2.0.sh is unchanged, so install support and CI coverage no longer align.

Additional Locations (1)

• .github/workflows/event-nightly.yml#L25-L29

 

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.10%. Comparing base (ef995b6) to head (443fa5b).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #994   +/-   ##
=======================================
  Coverage   97.10%   97.10%           
=======================================
  Files         141      141           
  Lines        8179     8179           
=======================================
  Hits         7942     7942           
  Misses        237      237           

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