remove-property(name,node?)
Remove property having specified name from specified node. Parameter name is a string representing an XML qualified name. Parameter node defaults to the context node.
A property is an application-level attribute which can be set on all kind of nodes (that is, not only on elements) and which is not serialized.
Examples:
remove-property("hidden");
namespace my="urn:x-acme:namespace:local";
remove-property("my:status", /);