Can't build C++11 with GNU

Author: walbourn

.github/workflows/wslcxx.yml

@@ -56,20 +56,7 @@ jobs:
       working-directory: ${{ github.workspace }}
       run: rm -rf out
 
-    - name: 'Configure CMake (C++11)'
-      working-directory: ${{ github.workspace }}/Tests
-      run: cmake --preset=${{ matrix.build_type }} -DBUILD_CXX11=ON
-      env:
-        CC: gcc-${{ matrix.gcc }}
-        CXX: g++-${{ matrix.gcc }}
-
-    - name: 'Build (C++11)'
-      working-directory: ${{ github.workspace }}/Tests
-      run: cmake --build out/build/${{ matrix.build_type }}
-
-    - name: 'Clean up'
-      working-directory: ${{ github.workspace }}
-      run: rm -rf out
+    # Can't build C++11 with GNU because tests use std::size which is C++14
 
     - name: 'Configure CMake (C++14)'
       working-directory: ${{ github.workspace }}/Tests