message: remove unnecessary flags for MSVC build action
diff: @@ -35,7 +35,7 @@ jobs:
  run: |
  mkdir build
  cd build
  - cmake -DBUILD_SHARED_LIBS=${{ matrix.config.shared }} -DCMAKE_CXX_FLAGS_DEBUG="/MDd /Zi /Ob1 /Od /RTC1" -DGINKGO_BUILD_CUDA=OFF -DGINKGO_BUILD_OMP=OFF -DGINKGO_MIXED_PRECISION=${{ matrix.config.mixed }} ..
  + cmake -DBUILD_SHARED_LIBS=${{ matrix.config.shared }} -DGINKGO_BUILD_CUDA=OFF -DGINKGO_BUILD_OMP=OFF -DGINKGO_MIXED_PRECISION=${{ matrix.config.mixed }} ..
  cmake --build . -j4 --config ${{ matrix.config.build_type }}
  ctest . -C ${{ matrix.config.build_type }} --output-on-failure
  