Clean-up helper method to fully read InputStream

cache/src/main/scala/coursier/Cache.scala

@@ -1127,20 +1127,6 @@ object Cache {
 
   var bufferSize = 1024*1024
 
-  def readFullySync(is: InputStream) = {
-    val buffer = new ByteArrayOutputStream()
-    val data = Array.ofDim[Byte](16384)
-
-    var nRead = is.read(data, 0, data.length)
-    while (nRead != -1) {
-      buffer.write(data, 0, nRead)
-      nRead = is.read(data, 0, data.length)
-    }
-
-    buffer.flush()
-    buffer.toByteArray
-  }
-
   def withContent(is: InputStream, f: (Array[Byte], Int) => Unit): Unit = {
     val data = Array.ofDim[Byte](16384)
 

cache/src/main/scala/coursier/Platform.scala

@@ -1,62 +0,0 @@
-package coursier
-
-import java.io._
-import java.nio.charset.Charset
-
-import coursier.util.EitherT
-
-import scala.language.implicitConversions
-import scala.util.{Failure, Success, Try}
-import scalaz.concurrent.Task
-
-object Platform {
-
-  def readFullySync(is: InputStream) = {
-    val buffer = new ByteArrayOutputStream()
-    val data = Array.ofDim[Byte](16384)
-
-    var nRead = is.read(data, 0, data.length)
-    while (nRead != -1) {
-      buffer.write(data, 0, nRead)
-      nRead = is.read(data, 0, data.length)
-    }
-
-    buffer.flush()
-    buffer.toByteArray
-  }
-
-  private lazy val UTF_8 = Charset.forName("UTF-8")
-
-  def readFully(is: => InputStream): Task[Either[String, String]] =
-    Task {
-      val t = Try {
-        val is0 = is
-        val b =
-          try readFullySync(is0)
-          finally is0.close()
-
-        new String(b, UTF_8)
-      }
-
-      t match {
-        case Success(r) => Right(r)
-        case Failure(e: java.io.FileNotFoundException) if e.getMessage != null =>
-          Left(s"Not found: ${e.getMessage}")
-        case Failure(e) =>
-          Left(s"$e${Option(e.getMessage).fold("")(" (" + _ + ")")}")
-      }
-    }
-
-  val artifact: Fetch.Content[Task] = { artifact =>
-    EitherT {
-      val conn = Cache.urlConnection(artifact.url, artifact.authentication)
-      readFully(conn.getInputStream)
-    }
-  }
-
-  def fetch(
-    repositories: Seq[core.Repository]
-  ): Fetch.Metadata[Task] =
-    Fetch.from(repositories, Platform.artifact)
-
-}

cache/src/main/scala/coursier/internal/FileUtil.scala

@@ -66,7 +66,7 @@ object FileUtil {
     }
   }
 
-  private def readFully(is: InputStream): Array[Byte] = {
+  def readFully(is: InputStream): Array[Byte] = {
     val buffer = new ByteArrayOutputStream
     val data = Array.ofDim[Byte](16384)