MimeType should be removed from k4dirstat.desktop

[satel-kalletuulos]

Related to Ubuntu k4dirstat package bug report: https://bugs.launchpad.net/ubuntu/+source/k4dirstat/+bug/1970925

The following line should be removed from k4dirstat.desktop file: MimeType=inode/directory;

The line causes, that K4dirstat may be registered as "inode/directory" handler, even though it is actually not a file manager. This then causes problems in LXQt: if there are SSHFS hotlinks on desktop, those are opened with K4dirstat, and accessing of files behind SSHFS hotlink becomes awful difficult. For some reason, with LXDE, SSHFS hotlinks are still opened with "normal" file manager even though K4dirstat has been registered as "inode/directory" handler.