If an application wants to show only specicific devices based on predicate
matching, and one of the matching devices loses an interface which is
critical for the Predicate to match, the application has to be notified.
As there is no dedicated signal to notify the application about the
fact a device no longer has e.g. a Solid::StorageAccess iface, signal the
device has been removed, and immediately readd it, as the device may
still be relevant.
Remove the call to updateBackend(udi), as the device backend listens to
the InterfacesRemoved signal itself and updates its property cache.