[autopaste] Revert 78acc

[EmmmaTech]

I'm not a fan of commit 78acc59 because if someone wants to use a codeblock to show an example and you forget to add #pre-ignore or !, it gives that prompt and you cannot delete it.

[EmmmaTech]

I know that this was merged intentionally, so I propose a compromise: make it so users can either enable deleting the autopaste message or just disable the autopaste message entirely.

[Soheab]

I'm not a fan of commit 78acc59395fa5622761c940a16b4c49933a357e5 because if someone wants to use a codeblock to show an example and you forget to add #pre-ignore or !, it gives that prompt and you cannot delete it.

That's why helpers can delete the auto paste message in help threads...

[EmmmaTech]

But what if they aren't around? The autopaste message has a timeout after all