net-snmp: Remove ebuild

All of the package that can depend on net-snmp have it disabled with USE
flags.

BUG=b:232315984
TEST=build_packages

Change-Id: Ie7e2b76fff023dadf34faab39d954ffc8b671d66
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/3835587
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Benjamin Gordon <bmgordon@chromium.org>
Tested-by: Benjamin Gordon <bmgordon@chromium.org>
20 files changed