docs: remove old mkdocs config

mkdocs.yml

@@ -1,35 +0,0 @@
-site_name: viv
-site_url: https://viv.dayl.in
-repo_url: https://github.com/daylinmorgan/viv
-edit_uri: edit/main/docs/
-repo_name: daylinmorgan/viv
-
-nav:
-  - home: index.md
-  - cli: cli.md
-
-theme:
-  name: material
-  logo: https://raw.githubusercontent.com/daylinmorgan/viv/main/assets/logo.svg
-  favicon: https://raw.githubusercontent.com/daylinmorgan/viv/main/assets/logo.svg
-  features:
-    - navigation.tabs
-    - navigation.indexes
-
-  palette:
-    # Palette toggle for dark mode
-    - scheme: slate
-      primary: deep purple
-      toggle:
-        icon: material/brightness-4
-        name: Switch to light mode
-
-    # Palette toggle for light mode
-    - scheme: default
-      primary: deep purple
-      toggle:
-        icon: material/brightness-7
-        name: Switch to dark mode
-
-markdown_extensions:
-  - footnotes