If the deadline is over and your application form was not submitted then no use of trying now as the date is over now

If you have applied successfully and  haven't just printed application form, there's no use of it. But it should be downloaded for further and future uses, now you said you didn't, don't worry, you have no use of it. Your hall ticket is the only thing needed for attempting examination. If you want, your application form, you can download it by visiting the website and logging in with your details. Usually application forms are printed only for our reference in the future if something goes wrong. It is just a safe and precautionary step but not a mandatory step.