FIXME/XXX removals: We have proper reference counting now

Now that we have proper reference counting for modules, interfaces, and
connections, no need to worry about grabbing a pointer to your "parent"
structure, all is good.

Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
module: remove unneeded XXX comment about module id values

We do properly check for duplicate module ids, as fixed in
008d85d90ae1ab31f1f7b80f245f6ee2eb5aed49 "module: don't create duplicate
module ids", so remove the XXX marker.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>