bulletmark [1] filed a deletion request for linux-dell [2]:
I created this package to include kernel patches which were essential
for my 2015 Dell XPS 13 laptop. All those patches are now included in
Arch kernel 4.1.3 so this package is now redundant and I won't be
maintaining it. Please delete it (and associated linux-dell-headers
and linux-dell-docs)
[1] https://aur4.archlinux.org/account/bulletmark/
[2] https://aur4.archlinux.org/pkgbase/linux-dell/