dev-rust/trace_events: remove

The underlying source is being removed. Nobody is using this, including
crosvm, which erroneously had this listed in DEPEND.

TEST=None
BUG=None

Change-Id: I6ed539aaa012698da59622ff365b9380e9340390
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/2988461
Reviewed-by: Stephen Barber <smbarber@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Zach Reizner <zachr@chromium.org>
Tested-by: Zach Reizner <zachr@chromium.org>
4 files changed