Since Truecrypt has effectively been superseded by the newer VeraCrypt. It seemed reasonable to tidy up the system by uninstalling Truecrypt. However, this software package doesn’t show up in searches of either Software Manager or Package Manager under Linux Mint. It turns out that one needs to use the following command in a Terminal window in order to uninstall the software:
sudo /.'/usr/bin/truecrypt-uninstall.sh'
References:
Cannot uninstall TrueCrypt
http://askubuntu.com/questions/463785/cannot-uninstall-truecrypt
linuxnorth.wordpress.com 