And remove extra newlines

Author: a-roberts

core/src/main/scala/org/apache/spark/util/collection/PartitionedAppendOnlyMap.scala

@@ -37,4 +37,3 @@ private[spark] class PartitionedAppendOnlyMap[K, V]
     update((partition, key), value)
   }
 }
-

core/src/main/scala/org/apache/spark/util/collection/PartitionedPairBuffer.scala

@@ -98,4 +98,3 @@ private[spark] class PartitionedPairBuffer[K, V](initialCapacity: Int = 64)
 private object PartitionedPairBuffer {
   val MAXIMUM_CAPACITY = Int.MaxValue / 2 // 2 ^ 30 - 1
 }
-

core/src/main/scala/org/apache/spark/util/collection/WritablePartitionedPairCollection.scala

@@ -127,4 +127,3 @@ private[spark] trait WritablePartitionedIterator {
 
   def nextPartition(): Int
 }
-