Cleanup unused code
- all ores related features, now handled by the SUP and outlink models
- mw_sql_to_hive was useful to propage ores scores using wikidata items as a pivot, DPE should have other scripts to perform similar tasks
- recommendation-create, now handled by the SUP
- rev scoring, now handled by the SUP
Also tweak convert_to_esbulk to drop support for unprefixed MultiList.