Update RELEASING.md

RELEASING.md

@@ -29,24 +29,11 @@ The process must currently be run from an arm64 Mac as we depend on that for
 uploading the `patch` artifact.  We build patch artifacts from GitHub Actions
 for other platforms.
 
-1. To test your changes you also need to modify `flutter`. (See also
-FORKING_FLUTTER.md).
+1. You can test the artifacts you built by modifying `bin/internal/flutter.version`
+   and commiting that to stable_codepush in shorebirdtech/flutter.
 
-I recommend testing the change (and the previous changes), by changing your
-local shorebird/bin/cache/flutter/bin/internal/engine.version to your engine
-version.
-
-At this point, assuming `shorebird` in your path points to your development
-checkout you should be able to test your changes with `shorebird release` and
-`shorebird patch`?
-
-1. Once you believe your changes are working you can commit the change to
-  `flutter`. We *should* update `shorebird_cli` dependencies to reflect this
-change, but that's not wired up yet.
-
-1.  Once our forked flutter is pushed, we also need to update shorebird_cli to
-  match the correct engine revision (this will go away when
-  https://github.com/shorebirdtech/shorebird/issues/282 is fixed).
+1.  Once `stable_codepush` flutter is pushed, we also need to update shorebird_cli
+    to pull the correct `flutter` revision.  `bin/internal/flutter.version`.
 
 1.  We also need to bump the `shorebird_cli` version in the `pubspec.yaml` and
     run `dart pub run build_runner build --delete-conflicting-outputs` to update
@@ -57,15 +44,5 @@ e.g.  https://github.com/shorebirdtech/shorebird/pull/287
 
 1.  To deploy the backend to production, navigate to the GitHub Actions at https://github.com/shorebirdtech/_shorebird/actions and select the Prod Deploy action (https://github.com/shorebirdtech/_shorebird/actions/workflows/deploy_prod.yaml). Click "Run workflow" and select the branch from the drop-down (we have been promoting from main but should probably switch to a release branch or tags?).
 
-1. We also currently need to push our
-forked version of `shorebirdtech/flutter` to `stable` as well, that step should
-be removed soon: https://github.com/shorebirdtech/shorebird/issues/282.
-
-e.g. https://github.com/shorebirdtech/flutter/pull/2
-
 1. Once all these changes are done, we push a new version of the CLI by pushing
 to the `stable` branch on `shorebird`.
-
-
-
-