DavidR
19
You can get rid of these Legacy_AAVM keys, it is a permissions issue. Navigate in the registry to the Key and right click on the Key and sellect Permissions… Select the User (you are logged on as) and tick Full Control - Allow accept the changes and this will now allow you to delete the key, repeat the excercise for the other key.
Warning: Export/backup the registry key prior to any edit/deletion so you can restore it if you mess up.
HTH David
Edit: AVG also left behind Legacy Keys (but lots more) when I got rid of it for avast!