Revert "workstation: Pull in all of workstation-product-environment"

Turns out the @^ construction for pulling in comps environment groups
doesn't work in kickstart, for reasons unknown.

This reverts commit 6c3c08f442.

fedora-workstation-packages.ks

@@ -6,8 +6,18 @@
 -@input-methods
 -@standard
 
-# Actual package selection is done in workstation-product-environment in comps
-@^workstation-product-environment
+# Make sure to sync any additions / removals done here with
+# workstation-product-environment in comps
+@base-x
+@core
+@fonts
+@guest-desktop-agents
+@hardware-support
+@libreoffice
+@multimedia
+@networkmanager-submodules
+@printing
+@workstation-product
 
 # Exclude unwanted packages from @anaconda-tools group
 -gfs2-utils