Revert "release_stages: Split Paygen -> Signing, Paygen stages."

This reverts commit ad7e9100db55397979f0fd18b842f3dc1c0fb2f1.

Change-Id: Ic2ba36265735b5289fe483956a8f501f763b4963
Reviewed-on: https://chromium-review.googlesource.com/337354
Reviewed-by: Don Garrett <dgarrett@chromium.org>
Tested-by: Ketaki Deshpande <ketakid@chromium.org>
3 files changed