It's ok but its pointless really. Twice as many will grow back in no time. Best thing to do would be to get it out of there if you have females in your grow area. Don't risk pollenation for one plant. But if the hermie is all you have, you can still smoke it. It wont be sinsemilla bud so it will be less potent.
Be sure it is a hermie before doing anything though. Sometimes immature calyxes can look like pollen sacks.