Alter distillation to remove redundant statements.
Alter distillation to remove redundant statements.

This solves an issue that otherwise is very hard to avoid, in which
occasionally you well get duplicate evidance when updating a pre-
assembled corpus.

pvtodorov/indra,pvtodorov/indra,pvtodorov/indra,sorgerlab/indra,johnbachman/indra,johnbachman/indra,bgyori/indra,johnbachman/indra,sorgerlab/indra,bgyori/indra,sorgerlab/belpy,sorgerlab/belpy,johnbachman/belpy,johnbachman/belpy,johnbachman/belpy,bgyori/indra,sorgerlab/belpy,sorgerlab/indra,pvtodorov/indra