You can uninstall or removes an installed libbrailleutils-java package itself from Ubuntu 12.04 LTS (Precise Pangolin) through the terminal,
$ sudo apt-get remove libbrailleutils-java
If you would like to remove libbrailleutils-java and it's dependent packages which are no longer needed from Ubuntu,
$ sudo apt-get remove --auto-remove libbrailleutils-java
If you use with purge options to libbrailleutils-java package all the configuration and dependent packages will be removed.
$ sudo apt-get purge libbrailleutils-java
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 libbrailleutils-java