docs: Remove requirements from README (not useful)

Author: pawamoy

README.md

@@ -49,27 +49,3 @@ This works the same as [a normal link to that heading](../doc1.md#hello-world).
 Linking to a heading without needing to know the destination page can be useful if specifying that path is cumbersome, e.g. when the pages have deeply nested paths, are far apart, or are moved around frequently. And the issue is somewhat exacerbated by the fact that [MkDocs supports only *relative* links between pages](https://github.com/mkdocs/mkdocs/issues/1592).
 
 Note that this plugin's behavior is undefined when trying to link to a heading title that appears several times throughout the site. Currently it arbitrarily chooses one of the pages.
-
-## Requirements
-
-mkdocs-autorefs requires Python 3.7 or above.
-
-<details>
-<summary>To install Python 3.7, I recommend using <a href="https://github.com/pyenv/pyenv"><code>pyenv</code></a>.</summary>
-
-```bash
-# install pyenv
-git clone https://github.com/pyenv/pyenv ~/.pyenv
-
-# setup pyenv (you should also put these three lines in .bashrc or similar)
-export PATH="${HOME}/.pyenv/bin:${PATH}"
-export PYENV_ROOT="${HOME}/.pyenv"
-eval "$(pyenv init -)"
-
-# install Python 3.7
-pyenv install 3.7.12
-
-# make it available globally
-pyenv global system 3.7.12
-```
-</details>