If you have a seperate room to grow the males in, then do so, as you can save all the trichome covered leaves and then eventually make some hash with it. Or you can leave them in with the females to pollinate them and produce seeds, and then use the leaves from the males to produce hash.
But thats too much pissing about in my opinion. Unless you want some seeds, or can be bothered to save up (literally) at least a QP of leaves, then just throw them. Why take up space with males when you can replace them with a female that actually produces a decent end product?