remove unused code

buildfile/src/main/scala/sbt/internal/EvaluateConfigurations.scala

@@ -11,7 +11,6 @@ package internal
 
 import sbt.internal.util.{ AttributeKey, LineRange, MessageOnlyException, RangePosition }
 
-import java.io.File
 import java.nio.file.Path
 import sbt.internal.util.complete.DefaultParsers.validID
 import Def.{ ScopedKey, Setting, Settings }
@@ -51,9 +50,6 @@ private[sbt] object EvaluateConfigurations {
       val settings: Seq[(String, LineRange)]
   )
 
-  /** The keywords we look for when classifying a string as a definition. */
-  private val DefinitionKeywords = Seq("lazy val ", "def ", "val ")
-
   /**
    * Using an evaluating instance of the scala compiler, a sequence of files and
    *  the default imports to use, this method will take a ClassLoader of sbt-classes and
@@ -192,10 +188,6 @@ private[sbt] object EvaluateConfigurations {
     }
   }
 
-  /** move a project to be relative to this file after we've evaluated it. */
-  private def resolveBase(f: File, p: Project) =
-    p.copy(base = IO.resolve(f, p.base))
-
   private def addOffset(offset: Int, lines: Seq[(String, Int)]): Seq[(String, Int)] =
     lines.map { (s, i) => (s, i + offset) }
 

internal/util-logging/src/main/scala/sbt/internal/util/Terminal.scala

@@ -198,7 +198,6 @@ trait Terminal extends AutoCloseable {
     val in = System.in
     val ESC = '\u001B'
     val EOT = '\u0004'
-    var result: Int = -1
     def readBracket: Int =
       in.read() match {
         case '[' => readAnsiControl

main/src/main/scala/sbt/Defaults.scala

@@ -979,7 +979,6 @@ object Defaults extends BuildCommon {
       },
       scalacOptions := {
         val old = scalacOptions.value
-        val converter = fileConverter.value
         if (exportPipelining.value)
           Def.uncached(
             Vector(
@@ -1955,7 +1954,6 @@ object Defaults extends BuildCommon {
           val hasJava = srcs.exists(_.name.endsWith(".java"))
           val cp = data(dependencyClasspath.value).toList
           val label = nameForSrc(configuration.value.name)
-          val fiOpts = fileInputOptions.value
           val reporter = (compile / bspReporter).value
           val converter = fileConverter.value
           val tFiles = tastyFiles.value
@@ -3343,7 +3341,6 @@ object Classpaths {
       val sbtOrg = scalaOrganization.value
       val version = scalaVersion.value
       val extResolvers = externalResolvers.value
-      val isScala3M123 = ScalaArtifacts.isScala3M123(version)
       val allToolDeps =
         if scalaHome.value.isDefined || scalaModuleInfo.value.isEmpty || !managedScalaInstance.value
         then Nil

main/src/main/scala/sbt/internal/Compiler.scala

@@ -18,7 +18,6 @@ object Compiler:
     Def.taskDyn {
       val sh = Keys.scalaHome.value
       val app = Keys.appConfiguration.value
-      val sv = Keys.scalaVersion.value
       val managed = Keys.managedScalaInstance.value
       sh match
         case Some(h) => scalaInstanceFromHome(h)

util-collection/src/main/scala/sbt/util/ListInstances.scala

@@ -10,7 +10,6 @@ package sbt.util
 private[sbt] object ListInstances:
   lazy val listMonad: Monad[List] =
     new Monad[List]:
-      type F[a] = List[a]
       def pure[A1](x: () => A1): List[A1] = List(x())
       def ap[A, B](ff: List[A => B])(fa: List[A]): List[B] =
         for