Delete download_test_build.py

The file was added in 2013, and performs the same function as crosdl.py
but with fewer options. If anyone is still using this, they should
switch to crosdl.py.

BUG=chromium:1031760
TEST=None

Change-Id: Icdb632604dd3d8a2983a9cf245a457e1aa51457d
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crostestutils/+/1959067
Tested-by: Greg Edelston <gredelston@google.com>
Reviewed-by: Katherine Threlkeld <kathrelkeld@chromium.org>
Reviewed-by: Aviv Keshet <akeshet@chromium.org>
Commit-Queue: Greg Edelston <gredelston@google.com>
2 files changed