delete parsed corpora for tests
delete parsed corpora for tests


Former-commit-id: 482cf1bca07d7ad8135a5296a3a30468446dd065 [formerly 16ace5e168a1d7a34b501639a7854c49fd12630a]
Former-commit-id: 85782227270ee76f88bb68fc066870d84ba6245a
interrogator/corpkit,interrogator/corpkit