public static void deleteProperty(String name) {
        if (properties == null) {
            if (isSetupMode()) {
                return;
            }
            properties = JiveProperties.getInstance();
        }
        properties.remove(name);
        clearXMLPropertyEncryptionEntry(name);
    }
Deletes a Jive property. If the property doesn't exist, the method
does nothing. All children of the property will be deleted as well.

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