[AB-xxx] removing old release workflow

.github/workflows/release.yml

@@ -1,19 +0,0 @@
-name: Publish package to GitHub Packages
-on:
-  release:
-    types: [created]
-jobs:
-  publish:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          persist-credentials: false
-      - name: Set up Java for publishing to GitHub Packages
-        uses: actions/setup-java@v1
-        with:
-          java-version: 1.8
-      - name: Publish to GitHub Packages
-        run: mvn --file pom.xml -B deploy -Dmaven.wagon.http.pool=false
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}