remove akka-2.4

frameworks/Scala/akka-http/build.sbt

@@ -9,7 +9,6 @@ scalaVersion := "2.11.6"
 resolvers += "Akka Snapshot Repository" at "http://repo.akka.io/snapshots/"
 
 libraryDependencies ++= Seq(
-  "com.typesafe.akka" %% "akka-actor" % "2.4-SNAPSHOT",
   "com.typesafe.akka" %% "akka-http-core-experimental" % "1.0-RC2",
   "com.typesafe.akka" %% "akka-http-scala-experimental" % "1.0-RC2",
   "com.typesafe.akka" %% "akka-http-spray-json-experimental" % "1.0-RC2",
@@ -21,4 +20,4 @@ libraryDependencies ++= Seq(
 
 assemblyJarName in assembly := "akka-http-benchmark.jar"
 
-mainClass in assembly := Some("com.typesafe.akka.http.benchmark.Main")
+mainClass in assembly := Some("com.typesafe.akka.http.benchmark.Main")