infra/go: remove unused source code and config

Packages have been successfully moved to infra/infra.

BUG=chromium:1185285
TEST=none

Change-Id: I666ea109eaf268e65a29384bfc96699a6a997cd9
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/infra/go/+/2762600
Commit-Queue: Jack Neus <jackneus@google.com>
Tested-by: Jack Neus <jackneus@google.com>
Reviewed-by: George Engelbrecht <engeg@google.com>
Reviewed-by: Dhanya Ganesh <dhanyaganesh@chromium.org>
10 files changed