To uninstall i3-wm just follow these instructions.
sudo apt-get remove i3-wm
This will remove just the i3-wm package itself.
sudo apt-get remove --auto-remove i3-wm
This will remove the i3-wm package and any other dependant packages which are no longer needed.
If you also want to delete your local/config files for i3-wm then this will work.
sudo apt-get purge i3-wm
Or similarly, like this i3-wm
sudo apt-get purge --auto-remove i3-wm
|Maintainer||Michael Stapelberg <email@example.com>|
|Description||improved dynamic tiling window manager a simple configuration file) and good multi-monitor support. The user interface is designed for power users and emphasizes keyboard usage. i3 uses XCB for asynchronous communication with X11 and aims to be fast and light-weight.|