Remove cachix

Author: rossabaker

.github/workflows/cache.yml

@@ -16,10 +16,5 @@ jobs:
       - name: "Install Nix️"
         uses: cachix/install-nix-action@v30
 
-      - name: "Install Cachix️"
-        uses: cachix/cachix-action@v15
-        with:
-          name: typelevel
-
       - name: "Nix Flake Check"
         run: nix -L flake check

.github/workflows/ci.yml

@@ -46,7 +46,7 @@ The generated site will end up in the `_site` directory.
 
 #### Nix
 
-A fully configured Jekyll is available as a Nix app.  Assumes that you have [installed Nix](https://nixos.org/download.html) and [enabled flakes](https://nixos.wiki/wiki/Flakes#Installing_flakes).  You may optionally use the [Typelevel Cachix](https://app.cachix.org/cache/typelevel#pull).
+A fully configured Jekyll is available as a Nix app.  Assumes that you have [installed Nix](https://nixos.org/download.html) and [enabled flakes](https://nixos.wiki/wiki/Flakes#Installing_flakes).
 
 ```console
 $ nix run github:typelevel/typelevel.github.com#jekyll build