diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index f3d9fa1..79298a6 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -17,7 +17,6 @@ jobs:
                     - ubuntu-24.04-arm
                     - macos-latest
                     - macos-15-intel
-        env: LLVM_SYS_211_PREFIX: /usr/lib/llvm-21
         steps:
             - name: Checkout
               uses: actions/checkout@v7
diff --git a/.github/workflows/test-build.yml b/.github/workflows/test-build.yml
deleted file mode 100644
index df73aff..0000000
--- a/.github/workflows/test-build.yml
+++ /dev/null
@@ -1,13 +0,0 @@
-name: "Test Build"
-on:
-  pull_request:
-jobs:
-  tests:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v5
-    - uses: cachix/install-nix-action@v31
-      with:
-        github_access_token: ${{ secrets.GITHUB_TOKEN }}
-    - run: nix build
-    - run: nix flake check