code: def drop_function(self, *names):
      def callback(f, variables, param_scope):
          self.verbose("Pass: Deleting {}.".format(f.name))
          f.disable()
  
      for name in names:
          self.on_function_pass_by_name(name)(callback)
  
imports: from __future__ import print_function
  import itertools
  from collections import OrderedDict
  import nnabla
  import numpy
label_desc: Use image node_id 9 for calling the NnpNetworkPass obj's underlying member method code with example usage: obj.drop_function() without return types