trivial: Fix a crash when a Unifying USB device is quickly replugged
trivial: Fix a crash when a Unifying USB device is quickly replugged

We need to remove the device from the delayed hash table to ensure we don't
accidently free the helper when it removed a *second* time.

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