code: def _dumx_remove(dumx, dumx_flat, p0):
      """
      remove p0 from dumx
      """
      res = []
      for dx in dumx:
          if p0 not in dx:
              res.append(dx)
              continue
          k = dx.index(p0)
          if k % 2 == 0:
              p0_paired = dx[k + 1]
          else:
              p0_paired = dx[k - 1]
          dx.remove(p0)
          dx.remove(p0_paired)
          dumx_flat.remove(p0)
          dumx_flat.remove(p0_paired)
          res.append(dx)
  
imports: from sympy.combinatorics.permutations import Permutation, _af_rmul, _af_invert, _af_new
  from sympy.combinatorics.perm_groups import PermutationGroup, _orbit, _orbit_transversal
  from sympy.combinatorics.util import _distribute_gens_by_base, _orbits_transversals_from_bsgs
label_desc: Use image node_id 5 for calling a global function with example usage: _dumx_remove(dumx, dumx_flat, p0) without return types