code: def simple_case(self, toremove, expected):
      root = ast.parse(toremove)
  
      remove_trivial(root)
  
      expected_root = ast.parse(expected)
  
      assert_ast_eq(self, root, expected_root)
  
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  import unittest
  import ast
  from ...asttools.mutators.remove_trivial import remove_trivial
  from ...asttools.tests import assert_ast_eq, skip_networkx
  from ...asttools.visitors.graph_visitor import GraphGen
label_desc: Use image node_id 1 for calling a global function with example usage: simple_case(toremove, expected) without return types