Can I hide the date on the first Post ?

Greetings.

I'd like to hide the date of the 1st post of the topic from a few forums if possible. If it needs to be for all forums, then it's ok.
The point is to hide how old a topic is, specially when there are no answers. This doesn't mean there is not date, only that it is not visible.

I wonder if there is a way to do that, even if I have to modify manually the template somehow.

Thanks