update workflow, rm tutorial 4 data

Author: dario-coscia

.github/workflows/export_tutorials.yml

@@ -60,7 +60,7 @@ jobs:
 
     - name: Remove unwanted files
       run: |
-        rm -rf build/
+        rm -rf build/ tutorials/tutorial4/data/
     - name: Create Pull Request
       uses: peter-evans/[email protected]
       with: