trivial: fu-udev-device: remove a prototype that was missed in b3d4d2ff
trivial: fu-udev-device: remove a prototype that was missed in b3d4d2ff

hughsie/fwupd,fwupd/fwupd,fwupd/fwupd,hughsie/fwupd,fwupd/fwupd,fwupd/fwupd,hughsie/fwupd,hughsie/fwupd