ws4py: Remove old portage-stable version

There is a newer version in chromiumos overlay.

BUG=b:145836152, b:172200550
TEST=./build_packages --board=hatch fingerprint_study

Change-Id: I7eaa51b52e5dad5fd37c29af9890ec590397940d
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/2565382
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Craig Hesling <hesling@chromium.org>
Tested-by: Craig Hesling <hesling@chromium.org>
6 files changed