[docs] Remove pickers page from the Lab section

[DanailH]

• I have followed (at least) the PR section of the contributing guide.

Depends on #32950

As part of the effort started in #32950 we would also want to remove the pickers page that is under the Lab section. The reason is that it can be confusing for new pickers users to know which page to look at (there are 2 in the search). By removing it will be clear that the correct package to use is the one under @mui-x.

https://deploy-preview-32961--material-ui.netlify.app/material-ui/about-the-lab/

[flaviendelangle]

Should we add a 301 redirection to the X doc or leave it fails with a 404 ?

[DanailH]

Should we add a 301 redirection to the X doc or leave it fails with a 404?

A redirect would be nicer. I'll add it.

[mui-bot]

No bundle size changes

Generated by 🚫 dangerJS against 4bbed0c

[oliviertassinari]

No objections, sounds fair 👍. If I were to challenge it, I would raise:

The reason is that it can be confusing for new pickers users to know which page to look at (there are 2 in the search)

I think that the main advantage of this page https://mui.com/material-ui/lab-date-and-time-pickers/ is for developers that are used to finding the component using the navigation:

For them, we could have solved the problem by removing the page from the search indexes (Google & Algolia). Now, these developers can still search and they will find the new location of the component, so I think that we are good.

Depends on #32950

I think that we could merge the two independently. I don't see a direct need for one to be merged with the other.

[flaviendelangle]

I'm merging it be sure not to forget it on Monday's release