code: def filter_missing_rna(s2bins, bins2s, rna_cov):
      
      for bin, scaffolds in list(bins2s.items()):
          c = 0
          for s in scaffolds:
              if s in rna_cov:
                  c += 1
          if c == 0:
              del bins2s[bin]
      for scaffold, bin in list(s2bins.items()):
          if bin not in bins2s:
              del s2bins[scaffold]
      return s2bins, bins2s
docs: remove any bins that don't have 16S