Comment 10 for bug 1232694

It looks like this commit changed the KDirModel.removeColumns() method by making it private instead of public
http://lists.kde.org/?l=kde-commits&m=137892823824128&w=4

It appears that the KDirModel.removeColumn() method (no 's' -- singular) was not affected by that commit.

To replicate the functionality, rather than commenting out the line, it appears removing column 3 twice would have the same effect:

Change this (app.py, line 237):
self.list_files_view_model.removeColumns( 3, 2 )

To this
self.list_files_view_model.removeColumn( 3 )
self.list_files_view_model.removeColumn( 3 )