Removing dead code

core/src/main/scala/spark/Utils.scala

@@ -589,19 +589,6 @@ private object Utils extends Logging {
     "%s at %s:%s".format(callSiteInfo.lastSparkMethod, callSiteInfo.firstUserFile,
                          callSiteInfo.firstUserLine)
   }
-  /**
-   * Try to find a free port to bind to on the local host. This should ideally never be needed,
-   * except that, unfortunately, some of the networking libraries we currently rely on (e.g. Spray)
-   * don't let users bind to port 0 and then figure out which free port they actually bound to.
-   * We work around this by binding a ServerSocket and immediately unbinding it. This is *not*
-   * necessarily guaranteed to work, but it's the best we can do.
-   */
-  def findFreePort(): Int = {
-    val socket = new ServerSocket(0)
-    val portBound = socket.getLocalPort
-    socket.close()
-    portBound
-  }
 
   /** Return a string containing the last `n` bytes of a file. */
   def lastNBytes(path: String, n: Int): String = {