If you want your page to still be indexed but do not want any link juice being passed to it:

Anytime you link to that particular page, through header menu, footer, or any links, simply add a rel=’nofollow” tag to the hyperlink. The tag will ensure that search engines do not follow that link, passing link juice from the current page to that page.

Know that the page will be indexed and crawled through sitemap submissions and other methods, it just won’t have a valuable Page Rank, because it does not need it, and the link juice will be distributed to the more important pages. If you are curious what your competitors have no-followed, try installing the no/do follow plugin for Firefox, it will color coordinate links that are either followed or no-followed.