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This makes a couple changes to the ddm bots: * removes the host configuration: now the DartSDK has dart2bytecode included by default, so we no longer need to build a custom host. None of the ddm flags were necessary on the host-build except for that tool. * removes the `--no-prebuilt-dart-sdk` from the target builds: turns out this was not needed because all artifacts that require building with `--dart-dynamic-modules` were not part of the dart sdk, but built by the flutter bot already. That includes the runtime (libflutter.so) and gen_snapshot. Note: the change to the Dart SDK has landed, but not rolled yet. It should be OK, however, to land the two changes out of order. b/393719931 cc @zanderso - FYI cc @jiahaog - note this PR will require an internal change to fetch the bytecode compiler from the default host going forward ## 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 [Flutter Style Guide], including [Features we expect every widget to implement]. - [ ] I signed the [CLA]. - [X] I listed at least one issue that this PR fixes in the description above. - [ ] 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] I followed the [breaking change policy] and added [Data Driven Fixes] where supported. - [x] All existing and new tests are passing. If you need help, consider asking for advice on the #hackers-new channel on [Discord]. <!-- Links --> [Contributor Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview [Tree Hygiene]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md [test-exempt]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests [Flutter Style Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md [Features we expect every widget to implement]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement [CLA]: https://cla.developers.google.com/ [flutter/tests]: https://github.com/flutter/tests [breaking change policy]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes [Discord]: https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md [Data Driven Fixes]: https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md Co-authored-by: Sigmund Cherem < 2049220+sigmundch@users.noreply.github.com>
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