Minor changes after auditing diff from earlier version

core/src/main/scala/org/apache/spark/rdd/HadoopRDD.scala

@@ -19,10 +19,7 @@ package org.apache.spark.rdd
 
 import java.io.EOFException
 
-import scala.reflect.ClassTag
-
 import org.apache.hadoop.conf.{Configuration, Configurable}
-import org.apache.hadoop.io.Writable
 import org.apache.hadoop.mapred.InputFormat
 import org.apache.hadoop.mapred.InputSplit
 import org.apache.hadoop.mapred.JobConf

core/src/main/scala/org/apache/spark/rdd/NewHadoopRDD.scala

@@ -113,9 +113,7 @@ class NewHadoopRDD[K, V](
           throw new java.util.NoSuchElementException("End of stream")
         }
         havePair = false
-        val key = reader.getCurrentKey
-        val value = reader.getCurrentValue
-        (key, value)
+        (reader.getCurrentKey, reader.getCurrentValue)
       }
 
       private def close() {

core/src/main/scala/org/apache/spark/util/Utils.scala

@@ -26,7 +26,6 @@ import scala.collection.JavaConversions._
 import scala.collection.Map
 import scala.collection.mutable.ArrayBuffer
 import scala.io.Source
-import scala.reflect.ClassTag
 
 import com.google.common.io.Files
 import com.google.common.util.concurrent.ThreadFactoryBuilder