Remove obsolete paper_trail initializer.
Remove obsolete paper_trail initializer.

dra/the-idb,dra/the-idb,idb-project/the-idb,dra/the-idb,idb-project/the-idb,rbns/the-idb,rbns/the-idb,rbns/the-idb,dra/the-idb,idb-project/the-idb,rbns/the-idb,idb-project/the-idb