def unregister_auth_backend(backend_cls):
 warn(u'reviewboard.accounts.backends.unregister_auth_backend() is deprecated. Use reviewboard.accounts.backends.auth_backends.unregister() instead.', DeprecationWarning)
 auth_backends.unregister(backend_cls)

def unregister_auth_backend ( backend_cls ) : warn ( u'reviewboard.accounts.backends.unregister_auth_backend() is deprecated. Use reviewboard.accounts.backends.auth_backends.unregister() instead.' , DeprecationWarning ) auth_backends . unregister ( backend_cls )
unregister a previously registered authentication backend .