remove output in test folder

Author: vkt1414

.github/workflows/test_colab.yml

@@ -104,7 +104,7 @@ jobs:
             docker exec -t colab /bin/bash -c "pip install papermill==2.4.0"
             
             # Change the working directory to the new directory
-            docker exec -t colab /bin/bash -c "set -o xtrace && set -o errexit && set -o pipefail && set -o nounset && set +o errexit && cd /content/temp/${nb} && papermill --log-level='DEBUG' /content/notebooks/getting_started/${nb}.ipynb /content/test/outputs/${nb}_papermill_output.ipynb && set -o errexit && ls -A"
+            docker exec -t colab /bin/bash -c "set -o xtrace && set -o errexit && set -o pipefail && set -o nounset && set +o errexit && cd /content/temp/${nb} && papermill --log-level='DEBUG' /content/notebooks/getting_started/${nb}.ipynb /content/temp/${nb}_papermill_output.ipynb && set -o errexit && ls -A"
                      
             docker stop colab
             docker rm colab