m0useanswered grow question 6 months ago O that's a bummer that is a male flower with a pistil coming out of it. Not great at all.
Pluck it off and wet your fingers when you do it. Water helps stop the spread of pollen. But chances are it has pollinated a lot of the tent if its a true male flower, It could also be some weird mutilation of the two and its pollen is not viable but won't know that till end of harvest.
If here is just one keep an eye out for more, if there is more then a few the plant will likely try and create more and more of them and this plant will need to be killed or isolated as not to pollinate others.
Good Luck!