chore: drop dependency management in the CB (#24061)

These changes were agreed on during the Core Meeting on September 24th,
2025.

[skip test]
[skip test_windows_fast]
[skip test_sbt]

Author: hamzaremmal

.github/workflows/ci.yaml

@@ -390,7 +390,7 @@ jobs:
         run: cp -vf .github/workflows/repositories /root/.sbt/ ; true
 
       - name: Test sbt
-        run: ./project/scripts/sbt "sbt-test/scripted; sbt-community-build/scripted"
+        run: ./project/scripts/sbt "sbt-test/scripted"
 
   publish_release:
     permissions:

build.sbt

@@ -47,7 +47,6 @@ val `dist-win-x86_64` = Build.`dist-win-x86_64`
 val `dist-linux-x86_64` = Build.`dist-linux-x86_64`
 val `dist-linux-aarch64` = Build.`dist-linux-aarch64`
 val `community-build` = Build.`community-build`
-val `sbt-community-build` = Build.`sbt-community-build`
 val `scala3-presentation-compiler` = Build.`scala3-presentation-compiler`
 val `scala3-presentation-compiler-testcases` = Build.`scala3-presentation-compiler-testcases`
 

community-build/src/scala/dotty/communitybuild/CommunityBuildRunner.scala

@@ -17,8 +17,6 @@ object CommunityBuildRunner:
    */
   extension (self: CommunityProject) 
     def run()(using suite: CommunityBuildRunner): Unit =
-      self.dependencies.foreach(_.publish())
-      self.testOnlyDependencies().foreach(_.publish())
       suite.runProject(self)
   end extension