How can I delete a waiting response for a code challenge

Question

I challenged some random but he isn't answering so I'd like to erase that challenge. How do I do that

Answer 1

It will automatically expire in next 48 hours if that person doesn't accept your challenge.

Answer 2

You can't erase challenges which you sent to someone and if that person didn't response to it than it will automatically expire in 48hrs

Answer 3

I see. Thanks for your response