IPA: don't disallow users to read other users' profile
    
    Reason for removing this: we don't store so much private information
    anymore, and we can't disallow people from seeing other people's email
    address on a case-by-case basis, it's either everyone or hand-picked
    services, but users can't choose to let other users see their info or
    not (as with the "private" FAS boolean).
    
    Signed-off-by: Aurélien Bompard <aurelien@bompard.org>