Every time you use Google+, it suggests three ‘people you may know’. After a while, it is likely that you do not know the suggested people anymore, and then this feature becomes just an annoying distraction and a big waste of space. This extension will hide the ‘people you may know’ section.
The extension is open-source. You may contribute to its development, suggest improvements or report bugs here: https://github.com/OiWorld/KnowNoOne .