Removed autosummary non existing templates

[fconil]

Purpose

Reading autosummary extension documentation, "Customizing templates", I noticed some of the templates files described did not exist in sphinx/ext/autosummary/templates/autosummary/.

• autosummary/function.rst – template for functions
• autosummary/attribute.rst – template for class attributes
• autosummary/method.rst – template for class methods

This pull request removed this part from the autosummary documentation page.

[AA-Turner]

I think this is trying to say that if you want to add your own templates, these are the ones that autosummary will look for, rather than that these are the default templates. I agree it is somewhat unclear, though.

A