Remove unused text format decoders
Remove unused text format decoders

silviucm/pgx,plopik/pgx,plopik/pgx,jonasi/pgx,josephglanville/pgx,silviucm/pgx,jackc/pgx,kelvich/pgx,silviucm/pgx,plopik/pgx,deoxxa/pgx,jackc/pgx,jackc/pgx,jackc/pgx,rsto/pgx