fix: Remove unused mkdocs stuff

Actual docs updates? Still to do. This just stops ansible-lint from
complaining.

docs/index.md

@@ -1,5 +1,8 @@
 # K8S-GitOps
 
+!!! warning
+    These docs haven't been touched in a while, so they might be out of date.
+
 This repository serves as the declarative "source of truth" for my Kubernetes
 cluster at home. [Flux] watches over the
 `cluster` folder to check for changes and apply them to the cluster.

mkdocs.yaml

@@ -1,9 +1,9 @@
 ---
+# yaml-language-server: $schema=https://squidfunk.github.io/mkdocs-material/schema.json
 site_name: Home Cluster
 site_description: Home Kubernetes (k3s) cluster managed by Flux2
 site_author: Wolfgang Vandevenne
 site_url: https://woll0r.github.io/k8s-cluster
-copyright: Copyright © 2021 Wolfgang Vandevenne
 dev_addr: 0.0.0.0:8000
 
 # Repository
@@ -59,7 +59,6 @@ markdown_extensions:
   - attr_list
   - def_list
   - footnotes
-  - meta
   - md_in_html
   - toc:
       permalink: true
@@ -70,9 +69,6 @@ markdown_extensions:
   - pymdownx.caret
   - pymdownx.critic
   - pymdownx.details
-  - pymdownx.emoji:
-      emoji_index: !!python/name:materialx.emoji.twemoji
-      emoji_generator: !!python/name:materialx.emoji.to_svg
   - pymdownx.highlight
   - pymdownx.inlinehilite
   - pymdownx.keys
@@ -82,12 +78,6 @@ markdown_extensions:
       repo: kube-gitops
   - pymdownx.mark
   - pymdownx.smartsymbols
-  - pymdownx.superfences:
-      custom_fences:
-        - name: mermaid
-          class: mermaid-experimental
-          format: !!python/name:pymdownx.superfences.fence_code_format
-  - pymdownx.tabbed
   - pymdownx.tasklist:
       custom_checkbox: true
   - pymdownx.tilde