Unable to remove Agent for Applications and Database

I have installed Agent for Applications and Database option during installation of Backup Exec 2012. 

And I purchased Backup Exec 2012 license and have already imported slf file but I did not purchase Agent for Application and Databases.

Now the trial period for Agent for Application and Database remain several days. 

When I tried to uninstall Agent for Application and Database option from Backup Exec 2012, but this option is still found after removing the option.

How can I remove Agent for Application and Database permanently.