There is no clear reason to have rules to generate dvi format
documentation, pdf is generally better supported nowadays.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20170113144135.5150-19-marcandre.lureau@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>