You can remove them directly from the box - no need for any external programmes. If you access the addons panel (usually blue button but varies per image) there should be a remove addons option and you can select them from there to uninstall.
That said, you dont really need to remove them, just have cccam set as the default and the others wont get used. The key to getting it all working is having the config correctly setup. I spent ages fiddling before I realised the converted box key I had used was wrong (used a convertor which wasnt from this site).