Fixed wrong default filter for default collection

refs #9601

- while i was testing different collections and different filters, i somehow thought that the default
  collection does not contain featured posts 😀 🙊
- this is wrong (!!!!)
- the url service is not yet connected
- so: this is not a bug

core/server/services/channels/Channels2.js

@@ -131,10 +131,7 @@ const collection1 = new Collection({
         value: '/{settings.permalinks}/'
     },
     config: {
-        type: 'posts',
-        options: {
-            filter: 'featured:false'
-        }
+        type: 'posts'
     }
 });