usually if part of the plant get seeds, the whole thing will get seeds. thats unfortunate man id say just make some tea or brownies as the seeded bud will not be very good at all to smoke. Good Luck
There isn't any way of getting rid of them...just let them mature and keep the seeds for next time! Depending on how much of the plant is seeded you MAY be able to cut off those branches (like say if its 1 or 2) but I wouldn't if they were big or if there were a lot of them...