cros_setup_toolchains: delete unused constant

Doesn't seem like this has ever been used in the history.

BUG=chromium:751852, b:162254118
TEST=precqs pass

Change-Id: I7bc08b4ac569db87012a5f4ef2cad40732eea0ca
Reviewed-on: https://chromium-review.googlesource.com/663959
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Manoj Gupta <manojgupta@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/2478982
Tested-by: Patryk Duda <patrykd@google.com>
Commit-Queue: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-by: Jett Rink <jettrink@chromium.org>
1 file changed