Remove calls to deprecated mapred's OutputCommitter.cleanupJob because since Hadoop 1.0.4

the mapred OutputCommitter.commitJob should do cleanup job.

In fact the implementation of mapred OutputCommitter.commitJob looks like this:

  public void commitJob(JobContext jobContext) throws IOException {
    cleanupJob(jobContext);
  }

(The jobContext input argument is type of org.apache.hadoop.mapred.JobContext)

core/src/main/scala/org/apache/spark/SparkHadoopWriter.scala

@@ -127,10 +127,6 @@ class SparkHadoopWriter(@transient jobConf: JobConf)
     cmtr.commitJob(getJobContext())
   }
 
-  def cleanup() {
-    getOutputCommitter().cleanupJob(getJobContext())
-  }
-
   // ********* Private Functions *********
 
   private def getOutputFormat(): OutputFormat[AnyRef,AnyRef] = {

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

@@ -638,7 +638,6 @@ class PairRDDFunctions[K: ClassTag, V: ClassTag](self: RDD[(K, V)])
     jobCommitter.setupJob(jobTaskContext)
     val count = self.context.runJob(self, writeShard _).sum
     jobCommitter.commitJob(jobTaskContext)
-    jobCommitter.cleanupJob(jobTaskContext)
   }
 
   /**
@@ -728,7 +727,6 @@ class PairRDDFunctions[K: ClassTag, V: ClassTag](self: RDD[(K, V)])
 
     self.context.runJob(self, writeToFile _)
     writer.commitJob()
-    writer.cleanup()
   }
 
   /**