Yank now only depends on util and can be always linked in. Also remove
the stubs as they are not needed anymore.

Signed-off-by: Lukas Straub <lukasstraub2@web.de>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <997aa12a28c555d8a3b7a363b3bda5c3cf1821ba.1616521341.git.lukasstraub2@web.de>