Sometimes I notice in theme created by others, that they have some classmap branch completely removed. Like this one:

This's the Tron Win10 theme ported by Moonique (currently I only have this as example, but there're more in another themes by others)

And when I tried to replicate that in another theme for testing porpuse, I couldn't find any way to remove it. There is no command in WSB to remove a branch of classmap. AFAIK, when a branch in classmap missing, we can add back by stylehack import (which exported previously from other theme where the branch exists). But such method unavailable to removing branch because there's no way to do it.

How was it even possible that they made theme like that? They have a different version of classmap for their instance of WSB?