code: def test_control_chars():
      text = (
          "\ufeffSometimes, \ufffcbad ideas \x7f\ufffalike these characters\ufffb "
          "\u206aget standardized.\r\n"
      )
      fixed = "Sometimes, bad ideas like these characters get standardized.\r\n"
      assert remove_control_chars(text) == fixed
  
file_path: python-ftfy/tests/test_characters.py
imports: from ftfy import fix_encoding, fix_encoding_and_explain, fix_text, fix_and_explain, apply_plan
  from ftfy.fixes import remove_control_chars, fix_surrogates
  from ftfy.chardata import possible_encoding
  from ftfy.badness import badness
  import unicodedata
  import sys
label_desc: Use image node_id 3 for calling a global function with example usage: test_control_chars() without return types