[9.1] (backport #18273) ci: remove sonarqube

[mergify]

Release notes

[rn:skip]

What does this PR do?

Remove sonarqube analysis in the CI and in the build system

Why is it important/What is the impact to the user?

This service will be decommissioned shortly

Checklist

• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have made corresponding change to the default configuration files (and/or docker env variables)
• I have added tests that prove my fix is effective or that my feature works

Author's Checklist

• [ ]

How to test this PR locally

Related issues

Use cases

Screenshots

Logs

---

This is an automatic backport of pull request #18273 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of cbef078 has failed:

On branch mergify/bp/9.1/pr-18273
Your branch is up to date with 'origin/9.1'.

You are currently cherry-picking commit cbef0782.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   .buildkite/aarch64_pipeline.yml
	modified:   .buildkite/scripts/jdk-matrix-tests/generate-steps.py
	modified:   ci/unit_tests.sh
	modified:   logstash-core/build.gradle
	deleted:    sonar-project.properties

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   .buildkite/pull_request_pipeline.yml

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

[github-actions]

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Just comment with:

• run docs-build : Re-trigger the docs validation. (use unformatted text in the comment!)

[elasticmachine]

💛 Build succeeded, but was flaky

• Buildkite Build
• Commit: e685512

Failed CI Steps

• 🥼 Integration Tests / part 4-of-6

History

• 💔 Build #3668 failed 15c883e

cc @v1v