Remove unused pipeline controller file.
Remove unused pipeline controller file.

sambooo/pachyderm,alexdebrie/pachyderm,alexdebrie/pachyderm,ShengjieLuo/pachyderm,klucar/pachyderm,ShengjieLuo/pachyderm,alexdebrie/pachyderm,klucar/pachyderm,ShengjieLuo/pachyderm,klucar/pachyderm,sambooo/pachyderm,sambooo/pachyderm