cleanup

jvm-packages/xgboost4j/src/main/java/ml/dmlc/xgboost4j/java/Booster.java

@@ -787,27 +787,6 @@ private Map<String, Double> getFeatureImportanceFromModel(
  return importanceMap;
  }
 
- /**
- * Save the model as byte array representation.
- * Write these bytes to a file will give compatible format with other xgboost bindings.
- *
- * If java natively support HDFS file API, use toByteArray and write the ByteArray
- *
- * @param withStats Controls whether the split statistics are output.
- * @return dumped model information
- * @throws XGBoostError native error
- */
- private String[] getDumpInfo(boolean withStats) throws XGBoostError {
- int statsFlag = 0;
- if (withStats) {
- statsFlag = 1;
- }
- String[][] modelInfos = new String[1][];
- XGBoostJNI.checkCall(XGBoostJNI.XGBoosterDumpModelEx(handle, "", statsFlag, "text",
- modelInfos));
- return modelInfos[0];
- }
-
  /**
  * Save model into raw byte array. Currently it's using the deprecated format as
  * default, which will be changed into `ubj` in future releases.