Alad [1] filed a deletion request for linux-galliumos-braswell [2]:
See maintainer comment:
"As the GalliumOS kernel releases no longer treat the braswell
platform specially from v4.12.0, this package has been superseded by
linux-galliumos [0].
Some braswell machines may still require or benefit from the GalliumOS
kernel patches/config but hopefully the official arch kernel releases
will be good enough for most of us starting from 4.12."
[1] https://aur.archlinux.org/account/Alad/
[2] https://aur.archlinux.org/pkgbase/linux-galliumos-braswell/