code: def modify(self, current_modified_line, anchors, file_path, file_lines=None,
                 index=None):
          
          open_wrapper_index = current_modified_line.rfind(self._open)
          # '- 1' removes trailing space. May want to modify to completely
          # strip whitespace at the end, instead of only working for a single
          # space
          return current_modified_line[:open_wrapper_index - 1] + "\n"
docs: Removes the trailing AnchorHub tag from the end of the line being
          examined.
  
          :param current_modified_line: string representing the the line at
              file_lines[index] _after_ any previous modifications from other
              WriterStrategy objects
          :param anchors: Dictionary mapping string file paths to inner
              dictionaries. These inner dictionaries map string AnchorHub tags
              to string generated anchors
          :param file_path: string representing the file_path of the current
              file being examined by this WriterStrategy
          :param file_lines: List of strings corresponding to lines in a text file
          :param index: index of file_lines corresponding to the current line
          :return: string. A version of current_modified_line that has the
              AnchorHub tag removed from the end of it