MATE f28: drop packages which are already listed in comps

- Drop the exclude on PackageKit,
  as system-config-printer now needs PackageKit-gtk3-module
- move gstreamer1-plugins-ugly-free to comps

fedora-mate-common.ks

@@ -1,6 +1,4 @@
 %packages
--PackageKit*                # we switched to dnfdragora, so we don't need this
-firefox
 @mate
 compiz
 compiz-plugins-main
@@ -16,22 +14,11 @@ emerald-themes
 emerald
 fusion-icon
 @networkmanager-submodules
-blueberry
 
 # some apps from mate-applications
 caja-actions
 mate-disk-usage-analyzer
 
-# system tools
-system-config-printer
-system-config-printer-applet
-lightdm-gtk-greeter-settings
-
-# audio video
-parole
-exaile
-gstreamer1-plugins-ugly-free # mp3 support
-
 # blacklist applications which breaks mate-desktop
 -audacious
 
@@ -41,10 +28,6 @@ gstreamer1-plugins-ugly-free # mp3 support
 # dsl tools
 rp-pppoe
 
-# some tools
-p7zip
-p7zip-plugins
-
 # FIXME; apparently the glibc maintainers dislike this, but it got put into the
 # desktop image at some point.  We won't touch this one for now.
 nss-mdns