app-emacs/emacs-common-gentoo: Drop package

app-editors/emacs was the only reverse dependency; very out of date and
has been renamed in Gentoo to app-emacs/emacs-common.

BUG=none
TEST=CQ passes

Change-Id: I3e39b7ee00ec29fdc90530bae6f630c34cbe107d
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/3910585
Tested-by: Matt Turner <msturner@google.com>
Commit-Queue: Matt Turner <msturner@google.com>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
3 files changed