This is probably for Hakre... There is no place to select the --remove option and since the loading of previously cracked password is out now, it's a waste of time to always recrack the same passwords. It could be in the form of a checkbox or something under the "settings" menu.
This will be available in the next update. I have this already working in the dev version. Incl. support for the ini and job files. Will be soon released.
Well technically this would be possible but right now, I only release the full package. But even the full package is quite like a zip:
Just download the rar file, unpack the setup.exe and then use
innounp to unpack hashcat-gui.exe from the setup.exe.