Hi johnq124, I had a couple of plants 'nanner'ed' on me near the end of my last grow. I panicked and plucked a bunch of them, but they just kept popping up. I let them finish maturing and after all was said and done, there were not enough seeds in the buds to worry about (about 100-150 seeds from 7 1/4 oz. of bud). Not all of the buds had seeds, I guess that genetically, the pollen from the nanners can only form seeds if the particular genetics of a flower was different enough for the pollen to fertilize it. I'm not sure, just a SWAG.
Don't cut them down, even with some seeds, the buds will still be as potent as with out seeds.