remove final remove-final-pekko.util.JavaDurationConverters use (#793)

Author: pjfanning

http-core/src/main/scala/org/apache/pekko/http/impl/settings/WebSocketSettingsImpl.scala

@@ -20,7 +20,6 @@ import pekko.annotation.InternalApi
 import pekko.http.impl.engine.ws.Randoms
 import pekko.http.impl.util._
 import pekko.util.ByteString
-import pekko.util.JavaDurationConverters._
 import com.typesafe.config.Config
 
 import scala.concurrent.duration.Duration
@@ -40,7 +39,7 @@ private[pekko] final case class WebSocketSettingsImpl(
     s"Unsupported keep-alive mode detected! Was [$periodicKeepAliveMode], yet only: ${WebSocketSettingsImpl.KeepAliveModes} are supported.")
 
   override def getPeriodicKeepAliveMaxIdle: java.time.Duration =
-    periodicKeepAliveMaxIdle.asJava
+    JavaDurationConverter.toJava(periodicKeepAliveMaxIdle)
   override def productPrefix = "WebSocketSettings"
 
 }

http-core/src/main/scala/org/apache/pekko/http/javadsl/settings/WebSocketSettings.scala

@@ -22,10 +22,10 @@ import pekko.actor.ActorSystem
 import pekko.annotation.DoNotInherit
 import pekko.http.impl.settings.WebSocketSettingsImpl
 import pekko.util.ByteString
-import pekko.util.JavaDurationConverters._
 import com.typesafe.config.Config
 
 import scala.concurrent.duration.Duration
+import scala.jdk.DurationConverters._
 
 /**
  * Public API but not intended for subclassing
@@ -60,7 +60,7 @@ trait WebSocketSettings { self: WebSocketSettingsImpl =>
    * @since 1.3.0
    */
   def withPeriodicKeepAliveMaxIdle(newValue: JDuration): WebSocketSettings =
-    copy(periodicKeepAliveMaxIdle = newValue.asScala)
+    copy(periodicKeepAliveMaxIdle = newValue.toScala)
   def withPeriodicKeepAliveData(newValue: Supplier[ByteString]): WebSocketSettings =
     copy(periodicKeepAliveData = () => newValue.get())