Fix: Removed unwanted output when updating datastream.

Bad behaviour was mentioned on http://code.google.com/p/jpachube/issues/detail?id=3 as issue #3
Fixed this bad behaviour by removing the line where the HttpRequest was send to the standard output

src/main/java/com/pachube/jpachube/Pachube.java

@@ -185,7 +185,6 @@ public HttpResponse updateDatastream(int feed, String datastream, String s) {
 		hr.setMethod(HttpMethod.PUT);
 		hr.addHeaderItem("X-PachubeApiKey", this.apiKey);
 		hr.setBody(s);
-		System.out.println(hr.getHttpCommand());
 		return client.send(hr);
 	}