All Kaspersky products have their own uninstall application and method available to all users. It's practically, the classical way of removing an application. If you cannot access the function mentioned, there is another possibility. It involves in downloading a custom tool from the Kaspersky website. Visit their website and download the little utility. The file name is
lngntcl.zip and it's 84 KB in size. Unpack the file and run it. You should see a number and based on that number (displayed on the website) you can check if the agent was removed or not.