Merge "Revert "Add a build_datetime_file arg to build_image.py"" into main am: 7b07f2f1a7

Original change: https://android-review.googlesource.com/c/platform/build/+/3436413

Change-Id: I9e8b599188a434ca05742daf32c3594179016a96
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>