cleanup: Deprecate Ingress-Nginx from kubernetes-apps (#12767)

* [docs] Remove ingress-nginx references in docs and scripts jinja

Signed-off-by: Meza <meza-xyz@proton.me>

* Remove ingress-nginx doc and remove references in readme and sidebar

Signed-off-by: Meza <meza-xyz@proton.me>

* Delete ingress-nginx dir from kubernetes-apps

Signed-off-by: Meza <meza-xyz@proton.me>

* Delete ingress-nginx from inventory addons

Signed-off-by: Meza <meza-xyz@proton.me>

* Delete ingress_nginx_enabled from default main

Signed-off-by: Meza <meza-xyz@proton.me>

* Delete ingress_nginx from download

Signed-off-by: Meza <meza-xyz@proton.me>

* Delete ingress_nginx from dependencies

Signed-off-by: Meza <meza-xyz@proton.me>

* Remove ingress_nginx from registry task

Signed-off-by: Meza <meza-xyz@proton.me>

---------

Signed-off-by: Meza <meza-xyz@proton.me>

roles/kubernetes-apps/ingress_controller/meta/main.yml

@@ -1,12 +1,5 @@
 ---
 dependencies:
-  - role: kubernetes-apps/ingress_controller/ingress_nginx
-    when: ingress_nginx_enabled
-    tags:
-      - apps
-      - ingress-controller
-      - ingress-nginx
-
   - role: kubernetes-apps/ingress_controller/cert_manager
     when: cert_manager_enabled
     tags: