public static void deleteXMLProperty(String name) {
        if (openfireProperties == null) {
            loadOpenfireProperties();
        }
        openfireProperties.deleteProperty(name);
    }
Deletes a locale property. If the property doesn't exist, the method
does nothing.

@param name the name of the property to delete.
xmppserver/src/main/java/org/jivesoftware/util/JiveGlobals.java