Avoiding strange mutation of observation object when deleting images

src/main/java/no/nibio/vips/logic/controller/session/ObservationBean.java

@@ -501,7 +501,6 @@ public class ObservationBean {
     		File fileToDelete = new File(this.getFilePath(observation) + "/" + ill.getObservationIllustrationPK().getFileName());
     		fileToDelete.delete();
     	}
-
         return observation;
     }
 

src/main/java/no/nibio/vips/logic/service/ObservationService.java

@@ -799,7 +799,7 @@ public class ObservationService {
 							
 							if(illusMap.get("deleted") != null && ((Boolean) illusMap.get("deleted")) == true)
 							{
-								mergeObs = observationBean.deleteObservationIllustration(mergeObs, new String[] {pk.getFileName()});
+								observationBean.deleteObservationIllustration(mergeObs, new String[] {pk.getFileName()});
 							}
 							else if(illusMap.get("uploaded") != null && ((Boolean) illusMap.get("uploaded")) == false && illusMap.get("imageTextData") != null)
 							{