rpm-ostree: No need for separate Negativo uld repo

Negativo17 all-in-one `multimedia` repo is used from `-main` Ublue image.

Author: fiftydinar

recipes/module-recipes/rpm-ostree.yml

@@ -4,7 +4,6 @@ repos:
   - https://copr.fedorainfracloud.org/coprs/fiftydinar/gnome-randr-rust/repo/fedora-%OS_VERSION%/fiftydinar-gnome-randr-rust-fedora-%OS_VERSION%.repo
   - https://copr.fedorainfracloud.org/coprs/elxreno/zsync/repo/fedora-%OS_VERSION%/elxreno-zsync-fedora-%OS_VERSION%.repo
   - https://copr.fedorainfracloud.org/coprs/decathorpe/miniaturo/repo/fedora-%OS_VERSION%/decathorpe-miniaturo-fedora-%OS_VERSION%.repo
-  - https://negativo17.org/repos/fedora-uld.repo
 
 install:
   - rom-properties-gtk3