Drop extension from config_exception, should be obvious from file path

def config_exception(e, file):

    abs_path = os.path.abspath(file)

    message = f"Problem parsing the XML in file {abs_path}, "

    message = f"Problem parsing file '{abs_path}', "

    message += "please correct the indicated portion of the file and restart Galaxy. "

    message += unicodify(e)

    log.exception(message)