Remove disturbing system.out.

solve/src/main/java/de/tudresden/inf/st/ttc18live/LiveContestDriverEMF.java

@@ -42,7 +42,7 @@ public class LiveContestDriverEMF extends AbstractLiveContestDriver {
   private Object loadFile(String path) throws IOException {
     repository.getURIConverter().getURIMap().put(URI.createFileURI(path), URI.createFileURI(getChangePath() + "/" + path));
     Resource mRes = repository.createResource(URI.createFileURI(getChangePath() + "/" + path));
-    System.out.println(mRes);
+    System.err.println(mRes);
     Map<String, Object> loadOptions = new HashMap<>();
     loadOptions.put(XMIResource.OPTION_DEFER_IDREF_RESOLUTION, true);
     loadOptions.put(XMIResource.OPTION_USE_PARSER_POOL, new XMLParserPoolImpl());