Prepares the Checkpoint for safe removal from DOM. Detaches all event handlers, destroys the internal button, and removes jQuery.data attributes to avoid memory leaks.

Important: This method does not remove the Checkpoint element from DOM.

Example - destroy the widget

<div id="checkpoint"></div>
<script>
$("#checkpoint").kendoCheckpoint({ state: "restore" });
var checkpoint = $("#checkpoint").data("kendoCheckpoint");
checkpoint.destroy();
</script>