ci: test if compiler step is needed

.github/workflows/build.yml

@@ -12,19 +12,11 @@ jobs:
   test_rust:
     name: Test Rust
     runs-on: ubuntu-22.04
-    env:
-      CC: gcc-12
-      CXX: g++-12
 
     steps:
       - uses: actions/checkout@v4
       - run: git submodule update --init --recursive
 
-      - name: Update compilers
-        run: |
-          sudo apt update
-          sudo apt install -y cmake build-essential libjemalloc-dev libomp-dev gcc-12 g++-12
-
       - name: Install Rust toolchain
         uses: actions-rs/toolchain@v1
         with: