docs(self-hosting): remove Knative example (#10342)

# Which Problems Are Solved

The Knative docs are removed, as they are not relevant enough.

# How the Problems Are Solved

- The docs page is removed
- The sidebar item is removed

# Additional Context

- Partially Closes #10016

docs/docs/self-hosting/deploy/knative.mdx

@@ -1,67 +0,0 @@
----
-title: Set up ZITADEL on Knative
-sidebar_label: Knative
----
-
-import Disclaimer from './_disclaimer.mdx'
-import DefaultUser from './_defaultuser.mdx'
-import Next from './_next.mdx'
-import NoteInstanceNotFound from './troubleshooting/_note_instance_not_found.mdx';
-
-
-## Install Knative
-
-Follow the [Knative quickstart guide](https://knative.dev/docs/getting-started/quickstart-install/) to get a local kind/minikube environment with Knative capabilities.
-
-For example, to install Knative on a kind cluster, run `kn quickstart kind`.
-
-## Run PostgreSQL
-
-If you are following the Knative Tutorial, you can deploy Postgres as a StatefulSet for the tutorials Bookstore sample app. For example:
-
-```bash
-git clone https://github.com/knative/docs.git
-kubectl apply -f docs/code-samples/eventing/bookstore-sample-app/solution/db-service/
-```
-
-## Start Zitadel as a Knative Service
-
-```bash
-kn service create zitadel \
---image ghcr.io/zitadel/zitadel:latest \
---port 8080 \
---env ZITADEL_EXTERNALDOMAIN=zitadel.default.127.0.0.1.sslip.io \
---env ZITADEL_EXTERNALSECURE=false \
---env ZITADEL_EXTERNALPORT=80 \
---env ZITADEL_TLS_ENABLED=false \
---env ZITADEL_DATABASE_POSTGRES_HOST=postgresql \
---env ZITADEL_DATABASE_POSTGRES_PORT=5432 \
---env ZITADEL_DATABASE_POSTGRES_DATABASE=zitadel \
---env ZITADEL_DATABASE_POSTGRES_USER_USERNAME=myzitadeluser \
---env ZITADEL_DATABASE_POSTGRES_USER_PASSWORD=myzitadelpassword \
---env ZITADEL_DATABASE_POSTGRES_USER_SSL_MODE=disable \
---env ZITADEL_DATABASE_POSTGRES_ADMIN_USERNAME=myuser \
---env ZITADEL_DATABASE_POSTGRES_ADMIN_PASSWORD=mypassword \
---env ZITADEL_DATABASE_POSTGRES_ADMIN_SSL_MODE=disable \
---env ZITADEL_FIRSTINSTANCE_ORG_HUMAN_PASSWORDCHANGEREQUIRED=false \
---env ZITADEL_DEFAULTINSTANCE_LOGINPOLICY_MFAINITSKIPLIFETIME="0s" \
---arg "start-from-init" --arg "--masterkey=MasterkeyNeedsToHave32Characters"
-```
-
-## Access ZITADEL
-
-### Get the ZITADEL URL
-
-```bash
-kn services list
-
-NAME      URL                                         LATEST          AGE   CONDITIONS   READY   REASON
-zitadel   http://zitadel.default.127.0.0.1.sslip.io   zitadel-00001   10m   3 OK / 3     True
-```
-
-Open your browser at http://zitadel.default.127.0.0.1.sslip.io/ui/console?login_hint=zitadel-admin@zitadel.zitadel.default.127.0.0.1.sslip.io and use the initial password _Password1!_
-
-<NoteInstanceNotFound/>
-
-<Next components={props.components} />
-<Disclaimer components={props.components} />

docs/sidebars.js

@@ -1082,7 +1082,6 @@ module.exports = {
         "self-hosting/deploy/macos",
         "self-hosting/deploy/compose",
         "self-hosting/deploy/devcontainer",
-        "self-hosting/deploy/knative",
         "self-hosting/deploy/kubernetes",
         "self-hosting/deploy/troubleshooting/troubleshooting",
       ],