Remove GitHub Actions Workaround for incompatible clang and libstc++ versions

see actions/runner-images#8659 for more info.

Author: martinmoene

.github/workflows/ci.yml

@@ -54,15 +54,6 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      # Workaround for incompatible clang and libstc++ versions, see
-      # <https://github.com/actions/runner-images/issues/8659> for more info.
-      # The basic idea here is to remove g++ 13 and its C++ standard library
-      # and replace that with a compatible version of libstdc++.
-      - name: Workaround for GHA runner images issue 8659
-        run: |
-          sudo apt-get purge -y g++-13 gcc-13 libstdc++-13-dev
-          sudo apt-get install -y --allow-downgrades libstdc++-12-dev libstdc++6=12.* libgcc-s1=12.*
-
       - name: Install Clang ${{ matrix.version }}
         run: sudo apt-get install -y clang-${{ matrix.version }}