How to uninstall aptitude-gtk from Ubuntu
To uninstall just aptitude-gtk package itself from Ubuntu execute on terminal:
sudo apt-get remove aptitude-gtk
Uninstall aptitude-gtk and it's dependent packages
To uninstall the aptitude-gtk package and any other dependant package which are no longer needed on Ubuntu.
sudo apt-get autoremove aptitude-gtk
If you also want to delete configuration and/or data files of aptitude-gtk from Ubuntu then this will work:
sudo apt-get purge aptitude-gtk
To delete configuration and/or data files of aptitude-gtk and it's dependencies from Ubuntu then execute:
sudo apt-get autoremove --purge aptitude-gtk
aptitude-gtk package information
terminal-based package manager (GUI and terminal interfaces)
aptitude is a package manager with a number of useful features, including: a mutt-like syntax for matching packages in a flexible manner, dselect-like persistence of user actions, the ability to retrieve and display the Debian changelog of most packages, and a command-line mode similar to that of apt-get. aptitude is also Y2K-compliant, non-fattening, naturally cleansing, and housebroken. This package contains an EXPERIMENTAL version of aptitude that includes a GTK+-based graphical interface. It is INCOMPLETE and may not work properly. If you do not need a GUI or prefer a more stable interface, you can instead use the version of aptitude found in the package "aptitude".
More information about apt-get remove
Advanced Package Tool, or APT, is a free software user interface that works with core libraries to handle the installation and removal of software on Debian, Ubuntu and other Linux distributions. APT simplifies the process of managing software on Unix-like computer systems by automating the retrieval, configuration and installation of software packages, either from precompiled files or by compiling source code.
apt-get is the command-line tool for handling packages, and may be considered the user's "back-end" to other tools using the APT library.
apt-get remove is identical to install except that packages are removed instead of installed. Note that removing a package leaves its configuration files on the system. If a plus sign is appended to the package name (with no intervening space), the identified package will be installed instead of removed.