Fixed error when generating user activity due to an already existing file

Author: ArnauPrat

src/main/java/ldbc/snb/datagen/hadoop/HadoopPersonSerializer.java

@@ -117,11 +117,11 @@ public void run( String inputFileName ) throws Exception {
         }
 
 
-		/*try{
-			fs.delete(new Path(rankedFileName), true);
+		try{
+		//	fs.delete(new Path(rankedFileName), true);
 			fs.delete(new Path(conf.get("ldbc.snb.datagen.serializer.hadoopDir")+"/aux"),true);
 		} catch(IOException e) {
 			System.err.println(e.getMessage());
-		}*/
+		}
 	}
 }