Undo the fix for SPARK-1758 (the problem is fixed)

Author: nishkamravi2

core/src/test/java/org/apache/spark/JavaAPISuite.java

@@ -639,8 +639,8 @@ public void wholeTextFiles() throws IOException {
     ds.close();
 
     HashMap<String, String> container = new HashMap<String, String>();
-    container.put("file:" + tempDirName+"/part-00000", new Text(content1).toString());
-    container.put("file:" + tempDirName+"/part-00001", new Text(content2).toString());
+    container.put(tempDirName+"/part-00000", new Text(content1).toString());
+    container.put(tempDirName+"/part-00001", new Text(content2).toString());
 
     JavaPairRDD<String, String> readRDD = sc.wholeTextFiles(tempDirName, 3);
     List<Tuple2<String, String>> result = readRDD.collect();