get rid of mysterious file

Author: jwklong

.github/workflows/build.yml

@@ -64,6 +64,10 @@ jobs:
           name: github-pages
           path: './'
 
+      - name: Clear artifact
+        run: |
+          rm -f artifact.tar
+
       - name: Commit
         uses: EndBug/[email protected]
         with: