Sortable: Fixed destroy to remove instance from element. Fixes #8094 - .sortable() after destroy does not work.

Author: scottgonzalez

ui/jquery.ui.sortable.js

@@ -65,7 +65,7 @@ $.widget("ui.sortable", $.ui.mouse, {
 
 	},
 
-	destroy: function() {
+	_destroy: function() {
 		this.element
 			.removeClass("ui-sortable ui-sortable-disabled");
 		this._mouseDestroy();