ulogd2: cleanup downstream files

ulogd2: cleanup downstream files

These files are outdated and they belong to downstream users (distributions).
Providing outdated and unmaintained files here serves no purpose other than
confusing users and annoy packagers.

If an user is using ulogd2 directly from the source tarball, I would expect it
to be proficient enough to generate these files by itself.

Signed-off-by: Arturo Borrero Gonzalez <arturo@netfilter.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>