To uninstall task-brazilian-portuguese just follow these instructions.
sudo apt-get remove task-brazilian-portuguese
This will remove just the task-brazilian-portuguese package itself.
sudo apt-get remove --auto-remove task-brazilian-portuguese
This will remove the task-brazilian-portuguese package and any other dependant packages which are no longer needed.
If you also want to delete your local/config files for task-brazilian-portuguese then this will work.
sudo apt-get purge task-brazilian-portuguese
Or similarly, like this task-brazilian-portuguese
sudo apt-get purge --auto-remove task-brazilian-portuguese
|Maintainer||Otavio Salvador <email@example.com>|
|Description||Brazilian Portuguese environment|