Remove println

Author: Feynman Liang

mllib/src/main/scala/org/apache/spark/mllib/clustering/LDAModel.scala

@@ -232,7 +232,6 @@ class LocalLDAModel private[clustering] (
       .sum()
     val batchVariationalBound = bound(documents, docConcentration,
       topicConcentration, topicsMatrix.toBreeze.toDenseMatrix, gammaShape, k, vocabSize)
-    println(s"bound: $batchVariationalBound")
     val perWordBound = batchVariationalBound / corpusWords
 
     perWordBound