refactor: get rid of leftover integration utils

Now that the Gradle and Maven integrations are no longer in this repo
we're not actually using the integration utils for anything. This PR
removes them and also removes any reference to sbt 0.x.

.github/workflows/ci.yml

@@ -37,8 +37,8 @@ jobs:
       - name: Tests
         run: |
           ./bin/sbt-ci.sh \
-              "sbtBloop10/publishLocal" \
-              "sbtBloop10/scripted"
+              "sbtBloop/publishLocal" \
+              "sbtBloop/scripted"
         shell: bash
   bridges:
     name: Test platform bridges

build.sbt

@@ -89,13 +89,7 @@ lazy val bloopShared = (project in file("shared"))
  * ************************************************************************************************
  */
 import build.Dependencies
-import build.Dependencies.{
-  Scala210Version,
-  Scala211Version,
-  Scala212Version,
-  Sbt013Version,
-  Sbt1Version
-}
+import build.Dependencies.{Scala210Version, Scala211Version, Scala212Version, SbtVersion}
 
 lazy val backend = project
   .enablePlugins(BuildInfoPlugin)
@@ -477,46 +471,13 @@ def isJdiJar(file: File): Boolean = {
   else file.getAbsolutePath.contains(SbtJdiTools.JavaTools.getAbsolutePath.toString)
 }
 
-lazy val integrationUtils211 = project
-  .in(integrations / "utils")
-  .settings(
-    scalafixSettings,
-    scalaVersion := Dependencies.Scala211Version,
-    libraryDependencies += Dependencies.bloopConfig,
-    target := (file(
-      "integrations"
-    ) / "utils" / "target" / "utils-2.11").getAbsoluteFile
-  )
-
-lazy val integrationUtils212 = project
-  .in(integrations / "utils")
-  .settings(
-    scalafixSettings,
-    scalaVersion := Dependencies.Scala212Version,
-    libraryDependencies += Dependencies.bloopConfig,
-    target := (file(
-      "integrations"
-    ) / "utils" / "target" / "utils-2.12").getAbsoluteFile
-  )
-
-lazy val integrationUtils213 = project
-  .in(integrations / "utils")
-  .settings(
-    scalafixSettings,
-    scalaVersion := Dependencies.Scala213Version,
-    libraryDependencies += Dependencies.bloopConfig,
-    target := (file(
-      "integrations"
-    ) / "utils" / "target" / "utils-2.13").getAbsoluteFile
-  )
-
-lazy val sbtBloop10: Project = project
+lazy val sbtBloop: Project = project
   .enablePlugins(ScriptedPlugin)
   .disablePlugins(ScalafixPlugin)
   .in(integrations / "sbt-bloop")
   .settings(
     BuildDefaults.scriptedSettings,
-    sbtPluginSettings("sbt-bloop", Sbt1Version),
+    sbtPluginSettings("sbt-bloop", SbtVersion),
     libraryDependencies += Dependencies.bloopConfig
   )
 
@@ -626,7 +587,7 @@ val allProjects = Seq(
   backend,
   frontend,
   benchmarks,
-  sbtBloop10,
+  sbtBloop,
   nativeBridge04,
   jsBridge06,
   jsBridge1,
@@ -635,17 +596,14 @@ val allProjects = Seq(
   launcherTest,
   sockets,
   bloopgun,
-  bloopgun213,
-  integrationUtils211,
-  integrationUtils212,
-  integrationUtils213
+  bloopgun213
 )
 
 val allProjectsToRelease = Seq[ProjectReference](
   bloopShared,
   backend,
   frontend,
-  sbtBloop10,
+  sbtBloop,
   nativeBridge04,
   jsBridge06,
   jsBridge1,
@@ -670,7 +628,6 @@ val bloop = project
   .settings(
     releaseEarly := { () },
     (publish / skip) := true,
-    crossSbtVersions := Seq(Sbt1Version, Sbt013Version),
     buildIntegrationsBase := (ThisBuild / Keys.baseDirectory).value / "build-integrations",
     publishLocalAllModules := {
       BuildDefaults
@@ -694,7 +651,7 @@ val bloop = project
       build.BuildImplementation
         .exportCommunityBuild(
           buildpress,
-          sbtBloop10
+          sbtBloop
         )
         .value
     }

project/BuildPlugin.scala

@@ -522,7 +522,7 @@ object BuildImplementation {
   val buildpressHomePath = System.getProperty("user.home") + "/.buildpress"
   def exportCommunityBuild(
       buildpress: Reference,
-      sbtBloop10: Reference
+      sbtBloop: Reference
   ) = Def.taskDyn {
     val isWindows: Boolean =
       System.getProperty("os.name").toLowerCase(Locale.ENGLISH).contains("windows")
@@ -540,7 +540,7 @@ object BuildImplementation {
       val bloopVersion = Keys.version.value
       Def.task {
         // Publish the projects before we invoke buildpress
-        (sbtBloop10 / Keys.publishLocal).value
+        (sbtBloop / Keys.publishLocal).value
 
         val file = Keys.resourceDirectory
           .in(Compile)

project/Dependencies.scala

@@ -6,8 +6,7 @@ object Dependencies {
   val Scala212Version = "2.12.17"
   val Scala213Version = "2.13.8"
 
-  val Sbt013Version = "0.13.18"
-  val Sbt1Version = "1.3.3"
+  val SbtVersion = "1.3.3"
 
   val nailgunVersion = "ee3c4343"
   // Used to download the python client instead of resolving