Remove duplicate packet from diagnostic pcap
Remove duplicate packet from diagnostic pcap

The packet sent to the VM is recorded already by `Udp.write` so
we don't need to record it again.

Signed-off-by: David Scott <63c9eb0ea83039690fefa11afe17873ba8278a56@docker.com>

djs55/vpnkit,djs55/vpnkit,djs55/vpnkit