[libvirt] [PATCH 3/9] qemu: drop unused QEMU_CAPS_DEVICE_USB_NET

[Andrea Bolognani]

On Fri, 2018-09-07 at 16:08 +0200, Ján Tomko wrote:
> Added by commit fc66c1603c and not used since.

Most importantly, usb-net was already present in QEMU 1.5.0,
which means we can drop the capability instead of implementing
the missing check. With that mentioned in the commit message,

  Reviewed-by: Andrea Bolognani <abologna at redhat.com>

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Andrea Bolognani / Red Hat / Virtualization