Up to you whether or not to keep it. If you're wanting to use its pollen for seeds, you can always flower it in another room. Just be careful after working around the male and then going into the same room as the females. It's easy to accidentally pollinate a branch by transferring pollen on your hands, clothes, hair, etc.

If you aren't wanting pollen from it, and you're not wanting to smoke it (it'll have a very low THC content), then just rid yourself of it however you see fit. For example, I like to yell vulgar things at my males before tossing them in a bonfire.