mashu: Enable gnome

hosts/mashu.nix

@@ -38,11 +38,10 @@
       xournalpp.enable = true;
       alacritty.enable = true;
       # TODO: Nextcloud client
-      plasma.enable = true;
-      plasma.mobile = true;
     };
     services = {
       gdm.enable = true;
+      gnome.enable = true;
     };
     system = {
       i18n.enable = true;