xbmc/xbmc — pull request #3519 by Montellese (2013-10-29 12:54:08+00:00)
Title: JSON-RPC: add possibility to remove artwork from video items

This has been requested by @MilhouseVH and others in the forum. It allows specifying the value of a specific artwork type in the "art" parameter of VideoLibrary.SetFooDetails to "null" which will remove that specific artwork from the item. It doesn't do any cleanup of any cached items whatsoever though.