Remove autosubmit config files that are no longer being used. This was from a previous design and not longer used. List which issues are fixed by this PR. You must list at least one issue. Part of flutter/flutter#130182 *If you had to change anything in the [flutter/tests] repo, include a link to the migration guide as per the [breaking change policy].* ## Pre-launch Checklist - [x] I read the [Contributor Guide] and followed the process outlined there for submitting PRs. - [x] I read the [Tree Hygiene] wiki page, which explains my responsibilities. - [x] I read and followed the [relevant style guides] and ran the auto-formatter. (Unlike the flutter/flutter repo, the flutter/packages repo does use `dart format`.) - [x] I signed the [CLA]. - [ ] The title of the PR starts with the name of the package surrounded by square brackets, e.g. `[shared_preferences]` - [x] I listed at least one issue that this PR fixes in the description above. - [ ] I updated `pubspec.yaml` with an appropriate new version according to the [pub versioning philosophy], or this PR is [exempt from version changes]. - [ ] I updated `CHANGELOG.md` to add a description of the change, [following repository CHANGELOG style]. - [ ] I updated/added relevant documentation (doc comments with `///`). - [x] I added new tests to check the change I am making, or this PR is [test-exempt]. - [x] All existing and new tests are passing. If you need help, consider asking for advice on the #hackers-new channel on [Discord].  [Contributor Guide]: https://github.com/flutter/packages/blob/main/CONTRIBUTING.md [Tree Hygiene]: https://github.com/flutter/flutter/wiki/Tree-hygiene [relevant style guides]: https://github.com/flutter/packages/blob/main/CONTRIBUTING.md#style [CLA]: https://cla.developers.google.com/ [flutter/tests]: https://github.com/flutter/tests [breaking change policy]: https://github.com/flutter/flutter/wiki/Tree-hygiene#handling-breaking-changes [Discord]: https://github.com/flutter/flutter/wiki/Chat [pub versioning philosophy]: https://dart.dev/tools/pub/versioning [exempt from version changes]: https://github.com/flutter/flutter/wiki/Contributing-to-Plugins-and-Packages#version-and-changelog-updates [following repository CHANGELOG style]: https://github.com/flutter/flutter/wiki/Contributing-to-Plugins-and-Packages#changelog-style [test-exempt]: https://github.com/flutter/flutter/wiki/Tree-hygiene#tests