This should be called by models after a row has been removed.
The location pointed to by path should be the location that
the row previously was at. It may not be a valid location anymore.
Nodes that are deleted are not unreffed, this means that any
outstanding references on the deleted node should not be released.
Emits the row-deleted signal on tree_model.
This should be called by models after a row has been removed. The location pointed to by path should be the location that the row previously was at. It may not be a valid location anymore.
Nodes that are deleted are not unreffed, this means that any outstanding references on the deleted node should not be released.