I know all about it, but I want it to remove because I do not want to save the list of his puzzles useless puzzles, I have no Public to the puzzle, nobody sees it in the public list of puzzles in my list of puzzles, hardly anyone looks. Conclusion: the puzzle is no longer needed, so I want to remove.
@Support, please add this possibility for those who do not want to accumulate puzzles that fail in the catalog