I think It’s been already asked but I never got any clear anwsers so I quickly wrote a little something that might help you: http://users.skynet.be/fa008785/ModoConfig.zip
It’s a very simple program which can read the main ‘MODO.CFG’ and list the Viewports and Layouts found in it… don’t worry it creates a backup of the original in the same folder where you dropped the little application under ‘Modo.txt’.
To use it, simply load you config… check in the list the Layouts/Viewports you want to delete and save the file. I did very few tests and It works for me.
I’m not a programer so I can’t say It works 100 % but there’re shouldn’t be any problems.
Anyway I first created it for my personal use but thought people might be interested.
The ripper.