Revert "Merge pull request #26 from LiveRamp/open_source_combiner"

This reverts commit f8548f0a0bdc19d48843bc85b2bd202c977bcc18, reversing
changes made to 00a3f3787e9ace324ef708c505ad58980cf1b990.
Merge pull request #27 from LiveRamp/revert_open_source_combiner

Revert "Merge pull request #26 from LiveRamp/open_source_combiner"