removed dependency to reset the blue yonder specific experiment tracker

git-svn-id: https://se1.informatik.uni-wuerzburg.de/usvn/svn/code/code/DMM/trunk@12327 9e42b895-fcda-4063-8a3b-11be15eb1bbd

edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/TacticExecutor.java

@@ -187,8 +187,6 @@ public class TacticExecutor {
 
     public void undoPreviousTactic() {
         logger.info("Reverting model to previous state");
-        for (IObserver o : observers)
-            o.undo();
         if (changeDescription != null)
             changeDescription.apply();
     }