"As a Contributor, I want to delete a page description, because the current description is wrong but I don't know the right description."
This is a general interface for updating descriptions; it should work whether descriptions come from Wikibase or from a local page property.
I think that this works best if we allow null in the description property in T259625.
If the wiki uses local descriptions, this should remove the short description template if it exists.
If the wiki uses Wikidata, this should remove the short description from Wikidata.
See T259622 for configuration options.