remove unecessary building & publish of jar file

.github/workflows/CI.yaml

@@ -31,18 +31,6 @@ jobs:
         with:
           gradle-version: wrapper
 
-      - name: Gradle build
-        run: |
-          ./gradlew build
-          mkdir data
-          cp ./build/libs/${GITHUB_REPOSITORY#*/}-*.jar ./data/app.jar
-
-      - name: Upload Build Artifact
-        uses: actions/upload-artifact@v3.1.3
-        with:
-          name: ${{steps.get_repo.outputs.REPO}}
-          path: ./data/app.jar
-
       - name: Trigger CD
         if: github.ref == 'refs/heads/main'
         uses: peter-evans/repository-dispatch@v2