code: def unregister_counter_nonzero(network):
    
    if not hasattr(network, "__counter_nonzero_handles__"):
      raise ValueError("register_counter_nonzero was not called for this network")
  
    for h in network.__counter_nonzero_handles__:
      h.remove()
  
    delattr(network, "__counter_nonzero_handles__")
    for module in network.modules():
      if hasattr(module, "__counter_nonzero__"):
        delattr(module, "__counter_nonzero__")
docs: Unregister nonzero counter hooks
    :param network: The network previously registered via `register_nonzero_counter`