Revert 13c8f298f9110d8fd0a9d6b77981870d227e8ce4

This change reverts the check for a previous cloud storage upload,
because it only checks for a single file, meaning any builder started after that file has been uploaded will fail.
Change-Id: Ia7c93468a58a45910bdfbe97ecf1a8c27ec70f59
Reviewed-on: https://flutter-review.googlesource.com/c/recipes/+/4880
Reviewed-by: Zach Anderson <zra@google.com>
Reviewed-by: Nurhan Turgut <nurhan@google.com>
Commit-Queue: Christopher Fujino <fujino@google.com>
45 files changed
tree: b3a9e4e727ffb59df945ebc09aa2685d9225dbee
  1. infra/
  2. recipe_modules/
  3. recipes/
  4. .gitignore
  5. .style.yapf
  6. OWNERS
  7. recipes.py