message: Update plan_generator_no_mpi.py
diff: @@ -7,7 +7,7 @@ from ortools.linear_solver import pywraplp
  import json
  import argparse
  -from topology_parser import get_topology_matrix, parse_conf
  +from topology_parser_no_mpi import get_topology_matrix, parse_conf
  parser = argparse.ArgumentParser(description="create transfer plan.")
  parser.add_argument("hugectr_conf", type=str, help="path to hugectr json file")
  