Bug found, disable debugging, use --headless2

.github/workflows/end2end-tests.yml

@@ -25,12 +25,6 @@ jobs:
       run: |
         pip install -r requirements.bootstrap.txt
 
-    - name: Setup upterm session
-      uses: lhotari/action-upterm@v1
-      with:
-        ## If no one connects after 5 minutes, shut down server.
-        wait-timeout-minutes: 5
-
     - name: Run end-to-end tasks
       run: |
-        tox -e py38-check -- pytest --failed-first --capture=no --reuse-session --exitfirst --strictdoc-long-timeouts -o cache_dir=build/pytest_end2end tests/end2end -k 'edit_grammar_move_field_down'
+        tox -e py38-check -- pytest --failed-first --capture=no --reuse-session --exitfirst --strictdoc-long-timeouts -o cache_dir=build/pytest_end2end tests/end2end -k 'edit_grammar_move_field_down' --headless2