How to uninstall crystalspace-dev from Ubuntu
To uninstall just crystalspace-dev package itself from Ubuntu execute on terminal:
sudo apt-get remove crystalspace-dev
Uninstall crystalspace-dev and it's dependent packages
To uninstall the crystalspace-dev package and any other dependant package which are no longer needed on Ubuntu.
sudo apt-get autoremove crystalspace-dev
If you also want to delete configuration and/or data files of crystalspace-dev from Ubuntu then this will work:
sudo apt-get purge crystalspace-dev
To delete configuration and/or data files of crystalspace-dev and it's dependencies from Ubuntu then execute:
sudo apt-get autoremove --purge crystalspace-dev
crystalspace-dev package information
Multiplatform 3D Game Development Kit dev files
Crystal Space is a free 3D game toolkit. It can be used for a variety of 3D visualization tasks. Many people will probably be interested in using Crystal Space as the basis of a 3D game, for which it is well suited. This dev part contains dev utilities, like tools to create levels, and a config utility.
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.