update workflow

.github/workflows/build.yml

@@ -86,11 +86,6 @@ jobs:
         with:
           submodules: recursive
 
-      - name: Install GCC
-        uses: egor-tensin/setup-mingw@v2
-        with:
-          platform: x64
-
       - name: Set up Java 17
         uses: actions/setup-java@v2
         with:
@@ -128,12 +123,6 @@ jobs:
         with:
           submodules: recursive
 
-      - name: Install GCC 11
-        run: |
-          sudo apt-get update
-          sudo apt-get install -y gcc-11 g++-11
-          sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-11 110 --slave /usr/bin/g++ g++ /usr/bin/g++-11
-
       - name: Set up Java 17
         uses: actions/setup-java@v2
         with:
@@ -176,12 +165,6 @@ jobs:
         with:
           submodules: recursive
 
-      - name: Install GCC
-        run: |
-          brew install gcc@11
-          echo "CC=gcc-11" >> $GITHUB_ENV
-          echo "CXX=g++-11" >> $GITHUB_ENV
-
       - name: Set up Java 17
         uses: actions/setup-java@v2
         with: