Remove redundant String#toString

lm-core/src/main/scala/sbt/internal/librarymanagement/SemanticSelectorExtra.scala

@@ -179,7 +179,7 @@ private[librarymanagement] abstract class SemComparatorFunctions {
           parse(
             numbers
               .collect { case Some(v) =>
-                v.toString
+                v
               }
               .mkString(".")
           )

lm-ivy/src/main/scala/sbt/internal/librarymanagement/ivy/IvyCredentials.scala

@@ -69,6 +69,6 @@ object IvyCredentials {
   private def read(from: File): Map[String, String] = {
     val properties = new java.util.Properties
     IO.load(properties, from)
-    properties.asScala.map { (k, v) => (k.toString, v.toString.trim) }.toMap
+    properties.asScala.map { (k, v) => (k, v.trim) }.toMap
   }
 }

main/src/main/scala/sbt/coursierint/CoursierRepositoriesTasks.scala

@@ -69,7 +69,7 @@ object CoursierRepositoriesTasks {
     val result2 =
       paths.ivyHome match {
         case Some(ivyHome) =>
-          val ivyHomeUri = ivyHome.toString
+          val ivyHomeUri = ivyHome
           result1 map {
             case r: FileRepository =>
               val ivyPatterns = r.patterns.ivyPatterns map {

main/src/main/scala/sbt/internal/VirtualFileValueCache.scala

@@ -27,7 +27,7 @@ sealed trait VirtualFileValueCache[A] {
 object VirtualFileValueCache {
   def definesClassCache(converter: FileConverter): VirtualFileValueCache[DefinesClass] = {
     apply(converter) { (x: VirtualFile) =>
-      if (x.name.toString != "rt.jar") Locate.definesClass(x)
+      if (x.name != "rt.jar") Locate.definesClass(x)
       else (_: String) => false
     }
   }