virtio: rng: remove unused struct element
virtio: rng: remove unused struct element

vdev is unused in struct virtrng_info, remove it.

CC: Amos Kong <1fdc5ab20d411167073fcb201e93d8b30d5f3951@redhat.com>
Signed-off-by: Amit Shah <c7a04b2314b75cab042d4753bd03a193bc8ee50d@redhat.com>
Signed-off-by: Rusty Russell <df9728c9e5104131c08c7adb03af425394842596@rustcorp.com.au>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs