Minor, removed commented code

Author: andsel

Diff for: logstash-core/src/main/java/org/logstash/common/BufferedTokenizer.java

@@ -176,7 +176,6 @@ public String toString() {
     }
 
     public boolean isEmpty() {
-//        return !dataSplitter.hasNext();
         return dataSplitter.isBufferEmpty();
     }
 }