CLN remove dataframe api consortium entrypoint
Discussed privately

In short:
- I'm no longer involved in the project
- nobody in pandas has much interest in leading the effort
- pandas devs are already carrying out enough (mostly unpaid) maintenance, let's not add to it

The Consortium is more than welcome to work on this, but outside of pandas
Just curious why you didn't update the `What's New` section to match the way it was done when adding the entrypoint: https://github.com/pandas-dev/pandas/commit/809f3710807efedc684c8f0ed4adef8d01af3171#diff-cc8593fd6d3036f46dbd73bcd245aef9a5e737cd22ca67e9567e686872bf093e. It took me a while to figure out where it was deleted.

@rgommers are you aware of this change? Hey Anatoly,

I can't remember exactly, I probably just forgot > @rgommers are you aware of this change?

I don't think I was, thanks for pointing it out. 

This change was breaking it looks like (or you wouldn't have noticed in Modin I think), and the maintenance burden was minimal (xref gh-54383 comments), so I wouldn't have done it this way. But ultimately decisions like this are up to the maintainers alone, so it is what it is.