code: def delmod_cli(argv, alter_logger=True):
      
      check_usage(delmod_doc, argv, usageifnoargs=True)
      if alter_logger:
          util.logger()
  
      cb = util.tools.calibrater()
  
      for mspath in argv[1:]:
          cb.open(b(mspath), addcorr=False, addmodel=False)
          cb.delmod(otf=True, scr=False)
          cb.close()
docs: Command-line access to ``delmod`` functionality.
  
      The ``delmod`` task deletes "on-the-fly" model information from a
      Measurement Set. It is so easy to implement that a standalone
      function is essentially unnecessary. Just write::
  
        from pwkit.environments.casa import util
        cb = util.tools.calibrater()
        cb.open('datasaet.ms', addcorr=False, addmodel=False)
        cb.delmod(otf=True, scr=False)
        cb.close()
  
      If you want to delete the scratch columns, use :func:`delcal`. If you want
      to clear the scratch columns, use :func:`clearcal`.