cros_bundle_firmware: remove unused function

BUG=chromium:595715
BRANCH=none
TEST=Bit-identical build except for timestamps

Change-Id: I0830cb3f44ba3fe361a4e01d7d9704badc310852
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://chromium-review.googlesource.com/414344
Commit-Ready: Patrick Georgi <pgeorgi@chromium.org>
Tested-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-by: Stefan Reinauer <reinauer@chromium.org>
1 file changed