freetype: drop old version

We have a newer one in chromiumos-overlay that's being used everywhere.

BUG=None
TEST=CQ passes

Change-Id: Iff1aaf01ff61ae8f8d615f44cda8004751a2029a
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/2566570
Reviewed-by: Sean Kau <skau@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>