4 frames in a space that should have 5 frames. Is the bottom solidly attached? if it is turn the nuc upside down and pry or unscrew it Turn the nuc back over and cut the comb at the sides of the supers turn the nuc back upside down. To avoid crushing bees place a 3/4" spacer under the nuc side and a 3/8" piece across the top bars to support the frames so as to not crush the bees. Press the frame end bars down on both ends till the top bars are resting on the 3/8" strip. then lift the nuc super off all the comb.
clean up the nuc replace the bottom if solidly attached, Then pry each frame off to the side and smoke, shake, or brush the bees off the frame and then cut the excess comb away and clean the combs up as best as possible The bees will recap any of the cells that get opened. Add a 5th frame to the nucs If you are going to keep them in it for your winter. Or place a follower board along side the fast frame.
Your season now is like our mid October. Depending on climate, honey flows, for where you are I would be tempted to leave them till spring before attempting to do anything with them now. If a queen gets damaged is there enough time for them to raise a replacement and get her mated? The bees like it to be quite warm before they will produce wax readily also to repair any damage. any comb you remove or trim down will be taking away from their winter stores.
I think if you try to clean these up in your fall of the year you may be doing it a month and a half to late in the year. proceeding now you may do more damage than good.
All that being said I do not know what your climate is like and how your flows are. so proceed with caution keeping in mind what the consequences for the bees will be