trivial: metadata: remove very old static VIA metadata
trivial: metadata: remove very old static VIA metadata

This information was a predecessor to metadata provided by LVFS with
actual files associated.  It's not useful to 99% of the machines it runs
on, and future VIA metadata should come directly with releases on LVFS.

hughsie/fwupd,fwupd/fwupd,fwupd/fwupd,hughsie/fwupd,fwupd/fwupd,fwupd/fwupd,hughsie/fwupd,hughsie/fwupd