Don't use Education logo.

Previously it was wrongly packaged in the xfce-settings.

(cherry picked from commit c7f80f3f65b78f2aec846cc6c7ddf96358d67054)

It was menu for old Simply Linux and doesn't related to MATE.

(cherry picked from commit cc5af09359502ec1a5f37a6a130a4e696a8c9d1e)

It was copy/pasted from Simply Linux branding and it definetly
doesn't make sense here.

(cherry picked from commit 85fa2d5fe52cea61e6cf730b1eab027de339138f)

We use MATE only in the workstation.

# Conflicts:
#	branding.spec

License can't be changed after update the package from a
repository, so don't change these files.
Install these files in %post and own them as
%ghost %config(noteplace). It this way they are will remain
even if the package will be removed.

- Remove desktop file missing in ALT Education
- Fix wine-uninstaller.desktop (add info about install)
- Drop desktop files fixed in package