$ sudo apt-get remove bspwm 

Uninstall bspwm including dependent package

If you would like to remove bspwm and it's dependent packages which are no longer needed from Ubuntu,

$ sudo apt-get remove --auto-remove bspwm 

Use Purging bspwm

If you use with purge options to bspwm package all the configuration and dependent packages will be removed.

$ sudo apt-get purge bspwm 

If you use purge options along with auto remove, will be removed everything regarding the package, It's really useful when you want to reinstall again.

$ sudo apt-get purge --auto-remove bspwm 

See Also,