remove unused static log

router/java/src/net/i2p/data/i2np/I2NPMessageException.java

@@ -17,11 +17,11 @@ import net.i2p.util.Log;
  * @author jrandom
  */
 public class I2NPMessageException extends I2PException {
-    private final static Log _log = new Log(I2NPMessageException.class);
     
     public I2NPMessageException(String message, Throwable parent) {
         super(message, parent);
     }
+
     public I2NPMessageException(String message) {
         super(message);
     }