Tgroup members fix

Author: Amina-Moussaoui

ToscaDesigner/src/main/java/fr/softeam/toscadesigner/handlers/propertypages/core/TGroupPropertyPage.java

@@ -64,7 +64,7 @@ public boolean accept(MObject element) {
                     }
                 });
 
-        List<? extends ModelElement> members = (List<? extends ModelElement>) this._element.getMembers();
+        //List<? extends ModelElement> members = (List<? extends ModelElement>) this._element.getMembers();
 		/*
         table.addProperty(
         	    "Members",