Think about it.
If this command was added, this wouldn't be only used for "Trap Spam". So the title is a bit off fetching.
Then comes the "Trap Spamming"; you spectate a trap spammer and you warn him. He continues trap spamming and all you do is "auto slay". That isn't much help now is it besides him losing a round next round. But now I contradicted myself.
You can just slay the perpetrator.