@Semwize: I wouldn't really know, I only noticed that when looking into something totally unrelated on a whim, and that was on 4.20 also
.
@jackie_w: You could stick a
rm -rf "/usr/local/TrollTech" in a NickelMenu command_spawn or command_output. (Taking care not to make a typo on this one, because that would be bad ^^).
(Alternatively, you can also let it lie, there should be enough of a buffer of free space available in there for quite a few stray files
).