Hello student if you've applied under reserved category student then yes you need to submit your category submit and avail the benefits.

But if you've applied under general category student and as you mentioned you're getting seat through general category seats then there's no need to submit your category certificate as it'll not effect your admission.

However to avail benefits like scholarship/stipend etc specially for students from reserved category you can submit your category certificate and apply for it.

I request you to please help me with the course/college you're concerned about so that I can check and provide you more exact information.

Feel free to comment if you've any doubt

Good luck