firewire: core: remove outdated comment

EXPORT_SYMBOL(fw_core_add_address_handler);

/**

 * Deallocate a range of addresses allocated with fw_allocate.  This

 * will call the associated callback one last time with a the special

 * tcode TCODE_DEALLOCATE, to let the client destroy the registered

 * callback data.  For convenience, the callback parameters offset and

 * length are set to the start and the length respectively for the

 * deallocated region, payload is set to NULL.

 * fw_core_remove_address_handler - unregister an address handler

 */

void fw_core_remove_address_handler(struct fw_address_handler *handler)

{