site-policy: Remove Enterprise Cloud Addendum from translations

[tnir]

Why:

Enterprise Cloud Addendum content/github/site-policy/github-enterprise-cloud-addendum.md looks removed in the past, the history is not disclosed: 3df90fc

/LANG/free-pro-team@latest/articles/github-enterprise-cloud-addendum has come to be redirected to /LANG/free-pro-team@latest/github/site-policy/github-enterprise-service-level-agreement.

What's being changed:

⚖️ Removes Enterprise Cloud Addendum from translations:

• de-DE: GitHub Enterprise Cloud-Nachtrag
• es-XL: Anexo de GitHub Enterprise Cloud
• ja-JP: GitHub Enterprise Cloudの補遺
• pt-BR: Adendo do GitHub Enterprise Cloud
• zh-CN: GitHub 企业云附录

Check off the following:

• All of the tests are passing.
• I have reviewed my changes in staging.
• For content changes, I have reviewed the localization checklist
• For content changes, I have reviewed the Content style guide for GitHub Docs.

[janiceilene]

👋 @tnir Thanks for opening this pull request! Unfortunately, we are not able to accept pull requests for translated content. Our translation process involves an integration with an external service at crowdin.com, where all translation activity happens. We hope to eventually open up the translation process to the open-source community, but we're not there yet.

See https://github.com/github/docs/blob/main/CONTRIBUTING.md#earth_asia-translations for more details.

[tnir]

@janiceilene Thanks, but this PR is not directly relevant to translations of CONTENT. This is about a technical debt similar to #256

@zeke (approver of the PR above) What do think?

[janiceilene]

Thanks for the PR, but we're not accepting contributions on this issue right now. This is normally handled by a script and we're working internally on cleaning up all the extraneous files and re-enabling the script.