Remove delorean repo overrides

Author: Alex-Welsh

etc/kayobe/kolla/kolla-build.conf

@@ -7,6 +7,7 @@ base_tag = noble-20241118.1
 {# Similarly pinning to Rocky 9 minor version used in our repos #}
 {% elif kolla_base_distro == 'rocky' %}
 base_tag = 9.{{ stackhpc_pulp_repo_rocky_9_minor_version }}
+rpm_setup_config = 
 {% endif %}
 build_args = {{ (kolla_build_args | default({})).items() | map('join', ':') | join(',') }}