fix(add-ons): Remove gateway-api application

- traefik takes care of that

applications/add-ons/gateway-api.yaml

@@ -1,18 +0,0 @@
-apiVersion: argoproj.io/v1alpha1
-kind: Application
-metadata:
-  name: gateway-api
-  namespace: argocd
-spec:
-  project: default
-  source:
-    repoURL: https://github.com/kubernetes-sigs/gateway-api
-    targetRevision: v1.4.1
-    path: config/crd/standard
-  destination:
-    server: https://kubernetes.default.svc
-    namespace: default
-  syncPolicy:
-    automated:
-      prune: true
-      selfHeal: true