code: def _rm_gos_edges(rm_goids, edges_all):
          
          edges_reduced = []
          for goid_child, goid_parent in sorted(edges_all, key=lambda t: t[1]):
              if goid_child not in rm_goids and goid_parent not in rm_goids:
                  edges_reduced.append((goid_child, goid_parent))
          return edges_reduced
docs: Remove any is_a edges that contain user-specified edges.