Leave aside compiling for different Java versions for now

.github/workflows/build.yml

@@ -21,11 +21,5 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Set up Java
-        uses: https://github.com/actions/setup-java@v4
-        with:
-          distribution: temurin
-          java-version: ${{ matrix.java }}
-
       - name: Compile with Gradle
         run: ./gradlew :compileJava