Removes the given row from the list store. After being removed, @iter is set to be the next valid row, or invalidated if it pointed to the last row in @list_store.
A valid #GtkTreeIter
%TRUE if @iter is valid, %FALSE if not.
See Implementation
Removes the given row from the list store. After being removed, @iter is set to be the next valid row, or invalidated if it pointed to the last row in @list_store.