Removed Provider Equinix Metal due to sunset

[n-boshnakov]

How to categorize this PR?

/kind enhancement

What this PR does / why we need it:
This PR removes the Equinix Metal service provider from the website due to it becoming sunset.

Which issue(s) this PR fixes:
Fixes #

Special notes for your reviewer:
Information for sunset (end of June 2026):
https://github.com/gardener/gardener-extension-provider-equinix-metal#equinix-metal-sunset
gardener/gardener-extension-provider-equinix-metal#453 (comment)

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[coderabbitai]

📝 Walkthrough

Walkthrough

Removes the gardener-extension-provider-equinix-metal documentation entry from .docforge/documentation/gardener-extensions/infrastructure.yaml, eliminating its _index.md and fileTree source references. The OpenStack provider section now transitions directly to the STACKIT section.

Changes

Equinix Metal Provider Documentation Removal

Layer / File(s)	Summary
Remove Equinix Metal from infrastructure config .docforge/documentation/gardener-extensions/infrastructure.yaml	Deletes the 8-line block defining the gardener-extension-provider-equinix-metal directory, its _index.md, and fileTree documentation source.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Possibly related PRs

• gardener/documentation#868: Also modifies infrastructure.yaml by removing provider-related directory and fileTree entries, making it directly related at the manifest-edit level.
• gardener/documentation#938: Modifies the same infrastructure.yaml file, adding gardener-extension-provider-stackit — the provider that now immediately follows OpenStack after this removal.

Suggested labels

size/S, lgtm, approved, cla: yes

Suggested reviewers

• klocke-io

Poem

🐇 Hop hop, the metal's gone,
No Equinix left to carry on.
From OpenStack we leap with glee,
Straight to STACKIT, wild and free!
The YAML trim'd, the config neat —
One less entry, job complete! 🌿

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title directly and clearly identifies the main change: removal of the Equinix Metal provider due to sunset, which matches the file changes and PR objectives.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description check	✅ Passed	The PR description adequately addresses all required template sections with appropriate categorization, clear rationale, and relevant context.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[BoHristova]

/lgtm

[gardener-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: BoHristova

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• OWNERS [BoHristova]

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[gardener-prow]

LGTM label has been added.

Details

Git tree hash: c6e02ffc2b7e1d15228790ada53c1366e25f6f9a