Remove old Scala versions from SbtBuildToolSuite

Author: jupblb

tests/buildTools/src/test/scala/tests/MillBuildToolSuite.scala

@@ -38,15 +38,19 @@ class MillBuildToolSuite extends BaseBuildToolSuite {
     else if (scalaVersion.startsWith("2.13"))
       "maven:org.scala-lang:scala-library:2.13.8"
     else
-      throw new IllegalArgumentException(s"Unsupported Scala version: $scalaVersion")
+      throw new IllegalArgumentException(
+        s"Unsupported Scala version: $scalaVersion"
+      )
 
   def scalaBinaryVersion(scalaVersion: String) =
     if (scalaVersion.startsWith("3"))
       "3"
     else if (scalaVersion.startsWith("2.13"))
       "2.13"
     else
-      throw new IllegalArgumentException(s"Unsupported Scala version: $scalaVersion")
+      throw new IllegalArgumentException(
+        s"Unsupported Scala version: $scalaVersion"
+      )
 
   for {
     mill <- List(Mill0_10, Mill0_11)

tests/buildTools/src/test/scala/tests/SbtBuildToolSuite.scala

@@ -5,7 +5,7 @@ abstract class SbtBuildToolSuite(sbt: Tool.SBT) extends BaseBuildToolSuite {
   import Tool._
 
   for {
-    scala <- List(Scala211, Scala2_12_12, Scala2_13_8, Scala3)
+    scala <- List(Scala2_13_8, Scala3)
   } yield {
     checkBuild(
       s"basic-${sbt.name}-${scala.name}",