Remove tag and ref when uploading package to cipd.

The workflow is to (pre-submit) build/upload device_doctor package to cipd without any refs/tags.

Since we are in short of capacity in try pool at this moment, the recipe will only test building/uploading the package. When capacity is availabe, we need to update the recipe to include testing logic for device healthcheck, dimensions validation, recovery, etc.

Tags/refs will be applied via a prod bot for post-submit only.

Bug: https://github.com/flutter/flutter/issues/66193
Change-Id: Ied5bfd10f528209388f960ad160d2db4a62ffeb8
Reviewed-on: https://flutter-review.googlesource.com/c/recipes/+/9420
Reviewed-by: Casey Hillers <chillers@google.com>
Commit-Queue: Keyong Han <keyonghan@google.com>