diff --git a/src/eu.aniketos.dasca.dataflow.tests/src/main/java/eu/aniketos/dasca/dataflow/tests/dummy/IO.java.orig b/src/eu.aniketos.dasca.dataflow.tests/src/main/java/eu/aniketos/dasca/dataflow/tests/dummy/IO.java.orig
deleted file mode 100644
index f4c6994..0000000
--- a/src/eu.aniketos.dasca.dataflow.tests/src/main/java/eu/aniketos/dasca/dataflow/tests/dummy/IO.java.orig
+++ /dev/null
@@ -1,87 +0,0 @@
-/*
- * (C) Copyright 2010-2015 SAP SE.
- *
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/epl-v10.html
- *
- */
-
-package eu.aniketos.dasca.dataflow.tests.dummy;
-
-import java.io.BufferedReader;
-import java.io.InputStreamReader;
-import java.sql.Connection;
-
-public class IO {
-
-	public static Connection getDBConnection() {
-		// TODO Auto-generated method stub
-		return null;
-	}
-
-	public static void writeString(String string) {
-		// TODO Auto-generated method stub
-		
-	}
-	
-	public static String readLine(){
-		/*/  // add/remove '*' to switch
-		String s = "";
-		try {
-			InputStreamReader converter = new InputStreamReader(System.in);
-			BufferedReader in = new BufferedReader(converter);
-			s = in.readLine();
-		} catch (Exception e) {
-			System.out.println("Error! Exception: "+e); 
-		}
-		return s;
-		/*/ 
-		return "";		 
-		/**/
-	}
-	
-	public static String readLine2(){
-		/*/  // add/remove '*' to switch
-		String s = "";
-		try {
-			InputStreamReader converter = new InputStreamReader(System.in);
-			BufferedReader in = new BufferedReader(converter);
-			s = in.readLine();
-		} catch (Exception e) {
-			System.out.println("Error! Exception: "+e); 
-		}
-		return s;
-		/*/ 
-		return "";		 
-		/**/
-	}
-	
-	public static String readLineGood(){
-		return "";
-	}
-	
-	public static String sanitize(String s){
-		return "";
-	}
-	
-	public static boolean testCondition(int i) throws IllegalArgumentException{
-		if(i<0){
-			throw new IllegalArgumentException("number must be positive");
-		}
-		return true;
-	}
-
-	public static void a() {
-	}
-
-	public static InputStreamReader getInputStreamReader(){
-		return null;
-	}
-
-	public static BufferedReader getBufferedReader(){
-		return null;
-	}
-
-}
diff --git a/src/eu.aniketos.dasca.dataflow.tests/src/main/java/eu/aniketos/dasca/dataflow/tests/dummy/Logger.java.orig b/src/eu.aniketos.dasca.dataflow.tests/src/main/java/eu/aniketos/dasca/dataflow/tests/dummy/Logger.java.orig
deleted file mode 100644
index d96c1ba..0000000
--- a/src/eu.aniketos.dasca.dataflow.tests/src/main/java/eu/aniketos/dasca/dataflow/tests/dummy/Logger.java.orig
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- * (C) Copyright 2010-2015 SAP SE.
- *
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/epl-v10.html
- *
- */
-
-package eu.aniketos.dasca.dataflow.tests.dummy;
-
-public class Logger {
-
-	public static Logger getLogger(String name){
-		return null;
-	}
-	
-	public void warning(String msg){
-		
-	}
-}