Answer: I would pinch them off. At this point, you want the plant to be spending its energy on foliage and root systems, not on flowering. In my experience seedlings blossom when they are rootbound and stressed for moisture, nutrients, or space. I hope you can get these seedlings in the ground soon. I recommend direct sowing some extra seeds, too, just as insurance, in case this batch is stunted. Good luck to you!
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