fix: remove mermaid2 plugin causing MkDocs build failures

- Remove mkdocs-mermaid2-plugin from requirements.txt
- Remove mermaid2 plugin configuration from mkdocs.yml
- Simplify pymdownx.superfences configuration
This should resolve the strict mode warnings

Author: thegdsks

mkdocs.yml

@@ -57,18 +57,11 @@ plugins:
       lang: en
   - minify:
       minify_html: true
-  - mermaid2:
-      arguments:
-        theme: auto
 
 markdown_extensions:
   - admonition
   - pymdownx.details
-  - pymdownx.superfences:
-      custom_fences:
-        - name: mermaid
-          class: mermaid
-          format: !!python/name:mermaid2.fence_mermaid
+  - pymdownx.superfences
   - pymdownx.highlight:
       anchor_linenums: true
   - pymdownx.inlinehilite

requirements.txt

@@ -4,7 +4,6 @@ mkdocs-material>=9.4.0
 
 # Plugins
 mkdocs-minify-plugin>=0.7.0
-mkdocs-mermaid2-plugin>=1.1.0
 
 # Additional utilities
 pymdown-extensions>=10.3.0