get rid of attic push and flake build

.github/workflows/flake-health-checks.yml

@@ -31,25 +31,3 @@ jobs:
                 skip-push: "true"
             - uses: actions/checkout@v4
             - run: nix flake check --accept-flake-config
-            - run: nix ./utils/attic-push.bash
-    build-checks:
-        name: "Build nix outputs"
-        runs-on: ${{ matrix.os }}
-        strategy:
-            matrix:
-                os: [ubuntu-latest]
-        steps:
-            - uses: DeterminateSystems/nix-installer-action@main
-            - name: Setup Attic cache
-              uses: ryanccn/attic-action@v0
-              with:
-                endpoint: ${{ secrets.ATTIC_ENDPOINT }}
-                cache: ${{ secrets.ATTIC_CACHE }}
-                token: ${{ secrets.ATTIC_TOKEN }}
-                skip-push: "true"
-            - uses: actions/checkout@v4
-            - name: Build all outputs
-              run: nix run git+https://nayeonie.com/ahuston-0/flake-update-diff -- --build .
-            - name: Push to Attic
-              run: nix ./utils/attic-push.bash
-              continue-on-error: true

.github/workflows/nix-fmt.yml

@@ -28,6 +28,3 @@ jobs:
                 skip-push: "true"
             - uses: actions/checkout@v4
             - run: nix fmt -- --check .
-            - name: Push to Attic
-              run: nix ./utils/attic-push.bash
-              continue-on-error: true