code: def _remove_esc_chars(self, raw_message):
          
          message = []
          escape_next = False
          for c in raw_message:
              if escape_next:
                  message.append(c ^ self._ESC_XOR)
                  escape_next = False
              else:
                  if c == self._ESC:
                      escape_next = True
                  else:
                      message.append(c)
  
          return message
docs: Removes any escape characters from the message
          :param raw_message: a list of bytes containing the un-processed data
          :return: a message that has the escaped characters appropriately un-escaped