libchewing: drop old unused package

BUG=None
TEST=CQ passes

Change-Id: If8741892a04b67f9d1af72ecc44e7e2a13f9c1c6
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/2940953
Reviewed-by: Leo Zhang <googleo@google.com>
Commit-Queue: Leo Zhang <googleo@google.com>
Tested-by: Leo Zhang <googleo@google.com>
5 files changed