chore(auto-submit-urls): remove workflow run cleanup step

Removed the 'Delete Workflow Runs' step from the 'auto-submit-urls.yml' workflow to
simplify the pipeline. The cleanup of URLs files remains unchanged.

.github/workflows/auto-submit-urls.yml

@@ -52,12 +52,6 @@ jobs:
         run: |
           mvn compile exec:java -Dexec.mainClass="cn.imzjw.AutoSubmitUrlApplications"
 
-      - name: Delete Workflow Runs
-        uses: Mattraks/delete-workflow-runs@main
-        with:
-          retain_days: 1
-          keep_minimum_runs: 1
-
       - name: Clean Up Files
         run: |
           if [ -f urls.txt ]; then rm -f urls.txt; echo "urls.txt file deleted."; fi