$ sudo apt-get remove bluez 

Uninstall bluez including dependent package

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

$ sudo apt-get remove --auto-remove bluez 

Use Purging bluez

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

$ sudo apt-get purge bluez 

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 bluez 

See Also,