We are a German based forum hoster and what you consider to be "personal confidential information" is actually mandatory contact information required by law for every German website.
For that matter we do not have a simple "Show imprint" yes/no-Option available in the forum administration.
However, since you are obviously not running a German website and different laws may apply in your country, you are free to take steps to hide or disable the imprint yourself.
The easy way to do this is to just hide it with a CSS Addon (Admin→Layout→Colors & Settings→CSS)
However, that only hides the div containing the address.
If you want to completely remove the imprint from your page you will have to edit the FAQ-Template directly. (Admin→Template development)