As they interfere with the table of contents, and aren't really needed on desktop UI. Buttons are still kept for mobile.
Documentation Website Files and Assets
This directory contains extra files for modifying the look and functionality of mdbook, the documentation software that's used to generate Synapse's documentation website.
The configuration options in the output.html section of book.toml
point to additional JS/CSS in this directory that are added on each page load. In
addition, the theme directory contains files that overwrite their counterparts in
each of the default themes included with mdbook.
Currently we use these files to generate a floating Table of Contents page. The code for which was partially taken from JorelAli/mdBook-pagetoc before being modified such that it scrolls with the content of the page.
More information can be found in mdbook's official documentation for injecting page JS/CSS and customising the default themes.