T8782: remove redundant pr-auto-close.yml on circinus

[andamasov]

Summary

Removes .github/workflows/pr-auto-close.yml from the circinus branch. Functionality is replaced by the central Mergify rule vyos/mergify#13 (merged), which closes PRs targeting EOL release branches (sagitta, crux, circinus) across every vyos/* repo that extends the central baseline.

Why this is safe

• vyos/vyos-1x extends the central Mergify config via .github/mergify.yml on the current (default) branch.
• Per Mergify docs, Mergify reads its configuration from the default branch regardless of the PR's target branch.
• The central rule already fires on any PR opened against circinus in this repo.

Sibling cleanup of vyos/vyos-1x#5228 (sagitta, merged).

Test plan

• After merge, open a test PR against vyos/vyos-1x:circinus and confirm Mergify closes it with the expected message.

🤖 Generated by robots

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Central YAML (base), Organization UI (inherited)

Review profile: CHILL

Plan: Pro Plus

Run ID: ea56c7f0-bcca-4999-b504-72c40b189b16

📥 Commits

Reviewing files that changed from the base of the PR and between d532241 and 2d5e6aa.

📒 Files selected for processing (1)

• .github/workflows/pr-auto-close.yml

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📝 Walkthrough

Summary by CodeRabbit

• Chores
  • Removed an automated workflow configuration that was handling pull requests.

Walkthrough

The pull request removes the entire .github/workflows/pr-auto-close.yml workflow file (22 lines deleted). This workflow previously triggered on pull_request_target events for the circinus branch and automatically closed matching pull requests using a third-party close action with a personal access token.

Changes

Cohort / File(s)	Summary
Workflow removal .github/workflows/pr-auto-close.yml	Complete deletion of the PR auto-close workflow that targeted circinus branch pull requests.

Possibly related PRs

• vyos/vyos-1x#5221: Adds or modifies the same pr-auto-close.yml workflow—inverse relationship to this removal.
• vyos/vyos-1x#5223: Also modifies .github/workflows/pr-auto-close.yml, specifically its workflow name.

✨ Finishing Touches

✨ Simplify code

• Create PR with simplified code
• Commit simplified code in branch feature/remove-pr-auto-close-circinus

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[github-actions]

Pull requests to this branch are not accepted and have been closed automatically.

[github-actions]

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No issues in PR Title / Commit Title

[mergify]

Pull requests targeting EOL release branches (sagitta, crux, circinus) are not accepted and have been closed automatically.