fixed gitea build action

.gitea/workflows/build.yaml

@@ -8,11 +8,6 @@ jobs:
     steps:
       - name: Checkout sources
         uses: actions/checkout@v4
-      - name: Setup Java
-        uses: actions/setup-java@v4
-        with:
-          distribution: temurin
-          java-version: 21
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v3
       - name: Execute Gradle build