State persist :new_attributes={} doesn't clear attributes #792
Description
state.set("pyscript.testname","started",new_attributes={})
doesn't remove the attributes.
also, earlier defined persistent pyscript.xxx variable don't get removed when not used.
Is there a way to remove persistent pyscript.xxx variables? when programming, I've tried different naming... and now I have several persisted pyscript variables that don't disappear. And I can't remove them on the entities screen, because they haven't got a unique id. Also, homeassistant.remove_entity_from_area (without specifying an area) doesn't remove it.