Enh workflow update.

.github/workflows/runPython.yml

@@ -17,6 +17,6 @@ jobs:
             - name: Install dependencies
               run: |
                   python -m pip install --upgrade pip
-                  pip install -r requests json base64 struct matplotlib.pyplot pandas
+                  pip install requests matplotlib pandas
             - name: Run script
               run: python iot_demo.py