CI: remove close release workflow step

.github/workflows/plugin-release.yml

@@ -555,36 +555,3 @@ jobs:
           sed -r -i "s/${STABLE_TAG_REGEX}/Stable tag:        ${PLUGIN_VERSION}/g" ./trunk/readme.txt
           svn commit -m "Releasing version $PLUGIN_VERSION" \
            --no-auth-cache --non-interactive  --username "$SVN_USERNAME" --password "$SVN_PASSWORD"
-
-  close-release:
-    name: Close ZenHub release
-    runs-on: ubuntu-latest
-    timeout-minutes: 5
-    needs: [create-release]
-    if: ${{ ! contains(github.event.inputs.version, 'rc') }}
-    steps:
-      - name: Harden Runner
-        uses: step-security/harden-runner@c8454efe5d0bdefd25384362fe217428ca277d57
-        with:
-          egress-policy: audit # TODO: change to 'egress-policy: block' after couple of runs
-
-      # https://github.com/ZenHubIO/API#get-release-reports-for-a-repository
-      # https://github.com/ZenHubIO/API#add-or-remove-issues-to-or-from-a-release-report
-      - name: Close release report
-        id: zenhub_release
-        run: |
-          echo "Getting list of releases from ZenHub"
-
-          RELEASES=$(curl -f -s -H "X-Authentication-Token: $ZENHUB_API_TOKEN" "https://api.zenhub.com/p1/repositories/${GITHUB_REPO_ID}/reports/releases")
-          CURRENT_RELEASE=$((echo $RELEASES ) | jq -r "first(.[] | select( .title == \"$PLUGIN_VERSION\" )) | .release_id")
-
-          if [[ -z $CURRENT_RELEASE ]]; then
-            echo "No ZenHub release found. Check whether the release titles match the expected plugin version."
-            exit 1
-          else
-            echo "Closing release report on ZenHub for release: $CURRENT_RELEASE"
-
-            curl -f -s -H "X-Authentication-Token: $ZENHUB_API_TOKEN" -H 'Content-Type: application/json' -X PATCH "https://api.zenhub.com/p1/reports/release/${CURRENT_RELEASE}" -d '{ "state": "closed" }'
-          fi
-        env:
-          ZENHUB_API_TOKEN: ${{ secrets.ZENHUB_API_TOKEN }}