don't really need a config parser now that I actually recalled how the fedmsg consumer works
This entire file is deprecated, no reason to keep this around anymore
Remove deprecated download.py stuff from __init__.py and the example config
Remove deprecated util.py functions compress, get_qcow2_files, and qcow2_to_raw

- We have been pulling .raw.xz's for some time now since they are now outputted
  by all Koji createImage build tasks that complete

- Compression is no longer needed since we don't download anything locally
  and downloader.py is gone
don't import the downloader; it no longer exists
Fix wrong import (wanted rawxz url retrieving func, not qcow2 func)
And that was the day I learned that a single `pass` test can reveal many errors.