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You will need to "hack" core files so do this only if you feel comfortable doing it. I'm NOT responsible for any damage you do to your site.
Find file:
...\components\com_community\views\profile\view.html.php
and line 299 should look like:
$profileField[$key][$pKey] = CRoute::_('index.php?option=com_community&view=search&task=field&' . $field . '=' . urlencode($field));
Comment it out, to look like:
//$profileField[$key][$pKey] = CRoute::_('index.php?option=com_community&view=search&task=field&' . $field . '=' . urlencode($field));
Add 2 "/" characters at begging of that line.
Save file, refresh site. There should not be a link, just text.
In case of JomSocial update that file will be overwritten, so you will need to make this change after every JomSocial update.