move Duration classes according to scala 2.10 nightly and remove casts to FiniteDuration, see #2504

akka-docs/rst/scala/code/docs/camel/Consumers.scala

@@ -59,7 +59,7 @@ object Consumers {
   object Sample4 {
     //#Consumer4
     import akka.camel.{ CamelMessage, Consumer }
-    import scala.concurrent.util.duration._
+    import scala.concurrent.duration._
 
     class Consumer4 extends Consumer {
       def endpointUri = "jetty:http://localhost:8877/camel/default"

akka-docs/rst/scala/code/docs/camel/Introduction.scala

@@ -79,7 +79,7 @@ object Introduction {
   {
     //#CamelActivation
     import akka.camel.{ CamelMessage, Consumer }
-    import scala.concurrent.util.duration._
+    import scala.concurrent.duration._
 
     class MyEndpoint extends Consumer {
       def endpointUri = "mina:tcp://localhost:6200?textline=true"

akka-docs/rst/scala/code/docs/camel/Producers.scala

@@ -17,7 +17,7 @@ object Producers {
     //#Producer1
     //#AskProducer
     import akka.pattern.ask
-    import scala.concurrent.util.duration._
+    import scala.concurrent.duration._
     implicit val timeout = Timeout(10 seconds)
 
     val system = ActorSystem("some-system")