Remove or fix mkdocs-static-i18n plugin (duplicate EN version, buggy language selector)

Feature request

🚀 Suggest ideas for new website features!

Checklist

• This issue is not a duplicate, I've searched the Issue Tracker
• This issue is not a question, I'm aware that I can submit questions via Mastodon, Twitter, Email, Reddit or Matrix
• This issue is a feature request, and not a bug report, content request, or anything other

What are you missing or what could be improved?

mkdocs v1.2 and mkdocs-material >= 7.1.0 include the multi-language switcher by default. It's unclear if the mkdocs-static-i18n plugin is still needed.

In particular since the plugin creates two issues:

• two versions, / and /en/, are created for the default language (EN)
• the language selector is buggy (might take you back to the homepage or not, might disappear as expected or not)

What is the solution you'd like to see?

If redundant, remove the mkdocs-static-i18n plugin (e.g. from requirements.txt, contributing.md, ...).

If not redundant, fix both issues described above.

Do you have additional comments?

N/A