Revert "Explicitly call python3 on release engine branches"

This reverts commit 5afd2becce09dd83ae0efc6e53715cba7318b194.

Reason for revert: My tests were failing pre-submit because they ran the latest recipe, and were using python3. This release branch has the version of this script written for python2.

Original change's description:
> Explicitly call python3 on release engine branches
>
> CP of https://flutter-review.googlesource.com/c/recipes/+/12740 to
> release engine recipes.
>
> BUG=https://github.com/flutter/flutter/issues/80727
>
> Change-Id: I5ee66a27f4847825b1e31824ac77f6538d3b3c33
> Reviewed-on: https://flutter-review.googlesource.com/c/recipes/+/12944
> Reviewed-by: Godofredo Contreras <godofredoc@google.com>
> Commit-Queue: Christopher Fujino <fujino@google.com>

TBR=godofredoc@google.com,flutter-scoped@luci-project-accounts.iam.gserviceaccount.com,fujino@google.com

Change-Id: Ibc2d1eee50a32d8327b810067ce51242cfa1606d
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: https://github.com/flutter/flutter/issues/80727
Reviewed-on: https://flutter-review.googlesource.com/c/recipes/+/12945
Reviewed-by: Christopher Fujino <fujino@google.com>
Reviewed-by: Godofredo Contreras <godofredoc@google.com>
Commit-Queue: Christopher Fujino <fujino@google.com>
50 files changed
tree: f231e54b71462d83781bc2af185eb51244ac89d8
  1. infra/
  2. recipe_modules/
  3. recipes/
  4. .gitignore
  5. .style.yapf
  6. AUTHORS
  7. branch_recipes.py
  8. LICENSE
  9. OWNERS
  10. README.md
  11. recipes.py
README.md

Flutter LUCI Recipes

This repository contains Flutter's LUCI recipes. For the LUCI infrastructure config, see flutter/infra on GitHub. Actual builds can be seen at ci.chromium.org.

Config

Tricium configurations recipes repo.

Recipe Branching for Releases

The script branch_recipes.py is used to generate new copies of the LUCI recipes for a beta release. See Recipe Branching for Releases for more information. For usage:

$ ./branch_recipes.py --help