two ways that I know of... you can remove them through the wii system menu.. this removes the content and and keeps the ticket (in case you ever want to reinstall them again)... tickets take up virtually no space at all so you don't have to worry bout that... you can also use Anytitle Deleter mod with a proper titles.txt to remove it.. this removes content and ticket...
download link is there another longer method is to use the wad creator to make a wad of it and then delete the channel with the wad manager
