As it's stated in https://bugs.kde.org/show_bug.cgi?id=394896: Files fed to listbox cannot be deleted; so the present proposal removes a "files()->isRoot()" condition, and that change allows that the aforementioned files can be deleted, though more changes may be necessary. As Krusader's virtual filesystem code is being talked about, the improvements of Krusader's virtual filesystem experts, search experts, etc. are welcome :-)
FIXED: [ 394896 ] Files fed to listbox cannot be deleted
BUG: 394896