Remove cups, cups-filters from portage-stable

These ebuilds are unused and out of date.

BUG=none
TEST=none

Change-Id: Ieaad8c485eff5e61df7fbd01e0e52f86d17a0d2f
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/2500764
Tested-by: Pranav Batra <batrapranav@chromium.org>
Auto-Submit: Pranav Batra <batrapranav@chromium.org>
Commit-Queue: Sean Kau <skau@chromium.org>
Commit-Queue: Benjamin Gordon <bmgordon@chromium.org>
Reviewed-by: Sean Kau <skau@chromium.org>
Reviewed-by: Benjamin Gordon <bmgordon@chromium.org>
23 files changed