Remove leftover println from StreamingMetrics

This removes a debug print that was left in the code by accident.

Signed-off-by: Amnon Heiman <amnon@scylladb.com>
Message-Id: <1452673361-8242-1-git-send-email-amnon@scylladb.com>

src/main/java/org/apache/cassandra/metrics/StreamingMetrics.java

@@ -80,7 +80,6 @@ public class StreamingMetrics
                     JsonArray sessions = streams.getJsonObject(i).getJsonArray("sessions");
                     for (int j = 0; j < sessions.size(); j++) {
                         String name = sessions.getJsonObject(j).getString("peer");
-                        System.out.println("adding stream" + name);
                         if (!instances.containsKey(name)) {
                             StreamingMetrics metrics = new StreamingMetrics(InetAddress.getByName(name));
                             instances.put(name, metrics);