Update workflows

.forgejo/workflows/ci.yml

@@ -7,16 +7,12 @@ on:
 
 env:
   CARGO_TERM_COLOR: always
-  NIX_CONFIG: experimental-features = nix-command flakes
 
 jobs:
   checks:
     name: checks
     runs-on: nixos
     steps:
-      - name: Install node
-        run: nix profile add nixpkgs#nodejs_24
-
       - name: Checkout
         uses: https://data.forgejo.org/actions/checkout@v4