May 8, 2010 (edited) , 翻译为ZH (显示翻译) , 从EN翻译 (展示原始文件)
The programs in the menu all go to the same executable program, theoretically they could start you at a specific skin of the interface but they don't.
So I can think of no reason to keep them all, since you can skip to different skins from within the "Advanced settings" tab, but I would do it as a stepped process.
Make sure the recycle bins not in automatic empty mode, then delete the ones you don't want, use it for a while before emptying the recycle bin.