<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def make_file_read_only(file_path):
 """ Removes the write permissions for the given file for owner, groups and others. :param file_path: The file whose privileges are revoked. :raise FileNotFoundError: If the given file does not exist. """

    old_permissions = os.stat(file_path).st_mode
    os.chmod(file_path, old_permissions & ~WRITE_PERMISSIONS)