Merge pull request #247 from DataDog/vickenty/noop-ctor

Remove non-public constructor

Author: vickenty

src/main/java/com/timgroup/statsd/NoOpStatsDClient.java

@@ -9,8 +9,6 @@
  */
 public class NoOpStatsDClient implements StatsDClient {
 
-    NoOpStatsDClient() {}
-
     @Override public void stop() { }
 
     @Override public void close() { }