Revert "Add SdkSandboxActivityAuthority"

Revert submission 25258913-sdkactivity-authority

Reason for revert: b/309424437

Reverted changes: /q/submissionid:25258913-sdkactivity-authority

Change-Id: Ibfb27602befae7d0f5577fdf4155696ae1686a16
4 files changed