Open the Terminal application.
Run the command cd /Library/Security/SecurityAgentPlugins/aucore_login.bundle/Contents/Resources/bin/ to switch to the directory.
Run the command sudo ./uninstall.
NOTE:Do not remove the aucore_login.bundle as it might break Mac OS X.
The endpoint must be manually removed on Advanced Authentication - Administrative Portal.
If the login is broken, the above method can be used to uninstall the Mac OS Client with the ssh console from another machine (only if Mac recovery is configured).