Remove render feature group

[Shatur]

What problem does this solve or what need does it fill?

Almost every Bevy plugin use render feature group by mistake. It pulls bevy_ui, bevy_sprite and a lot of other plugins. I did so many PRs for third party crates that fixed this 😄
For how many crates made this mistake see references to #4202

What solution would you like?

I would remove this feature group. We already have default feature which provides full engine experience.

[Nilirad]

I agree, but we need to document all those rendering features, so people can choose what they need.

[mockersf]

I agree too 👍