docs: def clean_dropbox_link(dropbox_url):
      """
      Dropbox links should be en-mass downloaed from dl.dropbox
  
      DEPRICATE?
  
      Example:
          >>> # ENABLE_DOCTEST
          >>> from utool.util_grabdata import *  # NOQA
          >>> dropbox_url = 'www.dropbox.com/s/123456789abcdef/foobar.zip?dl=0'
          >>> cleaned_url = clean_dropbox_link(dropbox_url)
          >>> result = str(cleaned_url)
          >>> print(result)
          dl.dropbox.com/s/123456789abcdef/foobar.zip
      """
      cleaned_url = dropbox_url.replace('www.dropbox', 'dl.dropbox')
      postfix_list = [
          '?dl=0'
      ]
      for postfix in postfix_list:
          if cleaned_url.endswith(postfix):
              cleaned_url = cleaned_url[:-1 * len(postfix)]
      # cleaned_url = cleaned_url.rstrip('?dl=0')
      return cleaned_url