db/migrations/V6__drop_trigram_indices.sql (5 lines of code) (raw):
-- These indexes were added to support some initial, pg_trgm based
-- text searches. These have been replaces by the tsvector searches
-- in operation now.
DROP INDEX headline_trgm_index;
DROP INDEX subhead_trgm_index;
DROP INDEX keywords_trgm_index;
DROP INDEX byline_trgm_index;
DROP INDEX body_text_trgm_index;