Revert "Prepare custom universes"

Author: javizqh

react_frontend/src/components/visualizers/WorldSelector.js

@@ -45,19 +45,10 @@ export default function WorldSelector(props) {
     window.RoboticsReactComponents.MessageSystem.Loading.showLoading(
       "Launching Universe"
     );
-
-    if (config.zip) {
-      await window.RoboticsExerciseComponents.commsManager.launchWorld({
-        world: config.world,
-        robot: config.robot,
-        zip: config.zip
-      });
-    } else  {
-      await window.RoboticsExerciseComponents.commsManager.launchWorld({
-        world: config.world,
-        robot: config.robot,
-      });
-    }
+    await window.RoboticsExerciseComponents.commsManager.launchWorld({
+      world: config.world,
+      robot: config.robot,
+    });
     await window.RoboticsExerciseComponents.commsManager.prepareVisualization(
       {type: config.visualization, file: config.visualization_config_path}
     );