remove v4.5.4 helm chart

Signed-off-by: Jintao Zhang <zhangjintao9020@gmail.com>

index.yaml

@@ -39,44 +39,6 @@ entries:
     urls:
     - https://github.com/kubernetes/ingress-nginx/releases/download/helm-chart-4.6.0/ingress-nginx-4.6.0.tgz
     version: 4.6.0
-  - annotations:
-      artifacthub.io/changes: |
-        - "Upgrade alpine 3.17.2"
-        - "Upgrade golang 1.20"
-        - "Drop testing/support for Kubernetes 1.23"
-        - "docs(helm): fix value key in readme for enabling certManager (#9640)"
-        - "Update Ingress-Nginx version controller-v1.7.0"
-        - "feat: OpenTelemetry module integration (#9062)"
-        - "canary-weight-total annotation ignored in rule backends (#9729)"
-        - "fix controller psp's volume config (#9740)"
-        - "Fix several Helm YAML issues with extraModules and extraInitContainers (#9709)"
-        - "Chart: Drop `controller.headers`, rework DH param secret. (#9659)"
-        - "Deployment/DaemonSet: Label pods using `ingress-nginx.labels`. (#9732)"
-        - "HPA: autoscaling/v2beta1 deprecated, bump apiVersion to v2 for defaultBackend (#9731)"
-        - "Fix incorrect annotation name in upstream hashing configuration (#9617)"
-      artifacthub.io/prerelease: "false"
-    apiVersion: v2
-    appVersion: 4.6.0
-    created: "2023-03-24T17:23:40.712897147Z"
-    description: Ingress controller for Kubernetes using NGINX as a reverse proxy
-      and load balancer
-    digest: c692fde630a81ea7d5d6b26ab25877a80170b5b24c31aa3dfd2e5cf8d2c186d4
-    home: https://github.com/kubernetes/ingress-nginx
-    icon: https://upload.wikimedia.org/wikipedia/commons/thumb/c/c5/Nginx_logo.svg/500px-Nginx_logo.svg.png
-    keywords:
-    - ingress
-    - nginx
-    kubeVersion: '>=1.20.0-0'
-    maintainers:
-    - name: rikatz
-    - name: strongjz
-    - name: tao12345666333
-    name: ingress-nginx
-    sources:
-    - https://github.com/kubernetes/ingress-nginx
-    urls:
-    - https://github.com/kubernetes/ingress-nginx/releases/download/helm-chart-4.5.4/ingress-nginx-4.5.4.tgz
-    version: 4.5.4
   - annotations:
       artifacthub.io/changes: |
         - "add lint on chart before release (#9570)"