[BGP] Remove hooks duplicating nova_wait_for_compute_service.yml

The nova_wait_for_compute_service.yml hook/playbook already covers what
BGP jobs did with bgp-l3-computes-ready.yml and discover-hosts-loop.yaml

OSPRH-19510

Author: eduolivares

.github/CODEOWNERS

@@ -7,7 +7,6 @@ roles/adoption_osp_deploy @openstack-k8s-operators/adoption-core-reviewers
 # BGP
 roles/ci_gen_kustomize_values/templates/bgp_dt01 @openstack-k8s-operators/bgp
 roles/ci_gen_kustomize_values/templates/bgp-l3-xl @openstack-k8s-operators/bgp
-playbooks/bgp-l3-computes-ready.yml @openstack-k8s-operators/bgp
 playbooks/bgp @openstack-k8s-operators/bgp
 scenarios/reproducers/bgp-l3-xl.yml @openstack-k8s-operators/bgp