Small clean-up to flatmap tests

core/src/test/scala/org/apache/spark/storage/FlatmapIteratorSuite.scala

@@ -33,34 +33,29 @@ class FlatmapIteratorSuite extends FunSuite with LocalSparkContext {
    * info from the serializer, and allow old objects to be GC'd
    */
   test("Flatmap Iterator to Disk") {
-    val sconf = new SparkConf().setMaster("local-cluster[1,1,512]")
-      .setAppName("iterator_to_disk_test")
+    val sconf = new SparkConf().setMaster("local").setAppName("iterator_to_disk_test")
     sc = new SparkContext(sconf)
     val expand_size = 100
     val data = sc.parallelize((1 to 5).toSeq).
       flatMap( x => Stream.range(0, expand_size))
     var persisted = data.persist(StorageLevel.DISK_ONLY)
-    println(persisted.count())
     assert(persisted.count()===500)
     assert(persisted.filter(_==1).count()===5)
   }
 
   test("Flatmap Iterator to Memory") {
-    val sconf = new SparkConf().setMaster("local-cluster[1,1,512]")
-      .setAppName("iterator_to_disk_test")
+    val sconf = new SparkConf().setMaster("local").setAppName("iterator_to_disk_test")
     sc = new SparkContext(sconf)
     val expand_size = 100
     val data = sc.parallelize((1 to 5).toSeq).
       flatMap(x => Stream.range(0, expand_size))
     var persisted = data.persist(StorageLevel.MEMORY_ONLY)
-    println(persisted.count())
     assert(persisted.count()===500)
     assert(persisted.filter(_==1).count()===5)
   }
 
   test("Serializer Reset") {
-    val sconf = new SparkConf().setMaster("local-cluster[1,1,512]")
-      .setAppName("serializer_reset_test")
+    val sconf = new SparkConf().setMaster("local").setAppName("serializer_reset_test")
       .set("spark.serializer.objectStreamReset", "10")
     sc = new SparkContext(sconf)
     val expand_size = 500