The wb-status page property was introduced via T42157 and removed via T146792. Flags included EMPTY, STUB and LINKSTUB, see T146792#2688105 for a detailed description. Originally we needed a maintenance script to populate these hints for all entities already in the database. Now we need the same script to remove existing wb-status page_props. This is not because they are outdated (this can not happen), but for consistency. Current state: https://www.wikidata.org/wiki/Special:PagesWithProp/wb-status

Since that script will need to load the full JSON of each entity, the maintenance script should probably support sharding, similar to how dumpJson does this.