Don't worry about it. Pick the seeds out if you want or let them mature and grow them. I grow seeded weed all the time on purpose. The only way to make your own crosses is to pollinate plants, collect the seeds and grow them. I haven't found any plants that I pollinated for seed to be any less potent than those without. There is no reason to freak out. Pick out the few seeds and smoke your pot.
What's really odd is that the people that freak out over a few seeds will turn around and spend $10 a seed for their next grow. It doesn't make any sense. In fact, I grow specifically for seeds. I make my own crosses. No need to pay for seeds when you can make them yourself. My last grow was a seed grow.