You can uninstall or removes an installed entangle package itself from Ubuntu 16.04 LTS (Xenial Xerus) through the terminal,
$ sudo apt-get remove entangle
If you would like to remove entangle and it's dependent packages which are no longer needed from Ubuntu,
$ sudo apt-get remove --auto-remove entangle
If you use with purge options to entangle package all the configuration and dependent packages will be removed.
$ sudo apt-get purge entangle
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 entangle