✔️ Linting Passed

All linting checks passed. Your pull request is in excellent shape! ☀️

_{Generated for commit: ef4b210. Link to the linter CI: here}

+1 for removal.

The only thing that we might either keep or redo is https://scikit-learn.org/stable/tutorial/machine_learning_map/index.html. That was quite famous in the past.

Naive question: what is outdated about the tutorials? I had a quick look at the supervised classification, unsupervised classification, model selection and clustering pages. While they seem very basic, I couldn't immediately spot anything that was wrong about them. They can/are useful to introduce people to ideas and concepts that they (hopefully) already know but using the "scikit-learn lingo/jargon".

One of the frequently mentioned "best things about scikit-learn" are the documentation and tutorials. So I think we need more than "they are outdated" and "doesn't make sense to keep them". Basically, some slightly more detailed explanation of why getting rid of them is a useful move to make. (So far I have no opinion either way)

They have not been maintained, to the point that sometimes they wouldn't even run. They're not a part of the CI, and they're not even formatted.

We never add content to them, and whenever we want to add a tutorial like thing, it's either an example or a user guide. Most "tutorials" people refer to are from our example gallery.

As I said here, happy to have separate issues and add basic info to our documentation which were in the tutorials.

But as the tutorial folder itself, it's not something we have looked at in a couple of years. And since these days we would add tutorial like material as an example, better to move them there if somebody feels they should be somewhere.

BTW I wish doc/tutorial/machine_learning_map/README.md can be kept in some way. We don’t frequently update the machine learning map so I think it’s nice to keep that note somewhere in case we forget how to do it in the future.

Added #29167 , and a redirect for the old ml map page (need to check if it works).

After checking, this should be ready to merge.

@OmarManzoor @Charlie-XIAO I let you merge in case you have further review comments.

Merging since no objections and two approvals.