Disable unused cachix action

This is for reading from a private binary cache, and with an auth token,
writing to the cache.  Our cache is currently unused.

Author: berquist

.github/workflows/nix.yml

@@ -21,11 +21,11 @@ jobs:
       - uses: cachix/install-nix-action@1ca7d21a94afc7c957383a2d217460d980de4934  # v31
         with:
           nix_path: nixpkgs=channel:nixos-unstable
-      # Pull from the cachix cache
-      - uses: cachix/cachix-action@1eb2ef646ac0255473d23a5907ad7b04ce94065c  # v17
-        with:
-          name: cclib
-          authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+      # Pull from our cachix cache (currently unused)
+      # - uses: cachix/cachix-action@1eb2ef646ac0255473d23a5907ad7b04ce94065c  # v17
+      #   with:
+      #     name: cclib
+      #     authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
       # Checkout of the current head in the working dir
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6
         with: