udev: Do not match USB devices, even with a GUID set
udev: Do not match USB devices, even with a GUID set

Prevents a warning about PRODUCT not existing when the usb plugin is disabled.

fwupd/fwupd,vathpela/fwupd,fwupd/fwupd,vathpela/fwupd,hughsie/fwupd,fwupd/fwupd,vathpela/fwupd,hughsie/fwupd,hughsie/fwupd,vathpela/fwupd,hughsie/fwupd,superm1/fwupd,superm1/fwupd,fwupd/fwupd,superm1/fwupd