Remove unused code `app.run()`
Remove unused code `app.run()`

`app` is not defined and this looks like leftover code.  In general, `utils.py` should not be run standalone.
sshleifer/object_detection_kitti,tombstone/models,jiaphuan/models,sshleifer/object_detection_kitti,jiaphuan/models,tombstone/models,jiaphuan/models,cshallue/models,alexgorban/models,cshallue/models,tombstone/models,alexgorban/models,sshleifer/object_detection_kitti,sshleifer/object_detection_kitti,derekjchow/models,tombstone/models,jiaphuan/models,cshallue/models,cshallue/models,derekjchow/models,derekjchow/models,jiaphuan/models,sshleifer/object_detection_kitti,tombstone/models,alexgorban/models,derekjchow/models,jiaphuan/models,derekjchow/models,cshallue/models,alexgorban/models,sshleifer/object_detection_kitti,tombstone/models,alexgorban/models