Remove additional packages from Modular variant

Pulling these packages into Modular content is probably not the right
thing to do. The config should only list variants that get traditional
content.

Signed-off-by: Lubomír Sedlář <lsedlar@redhat.com>

fedora.conf

@@ -106,7 +106,7 @@ lorax_options = [
 
 # fomat: [(variant_uid_regex, {arch|*: [packages]})]
 additional_packages = [
-    ('.*', {
+    ('^(Workstation|Server|Cloud|Everything)$', {
         '*': [
             'kernel*',
             'dracut*',