Update app.py

app.py

@@ -20,7 +20,7 @@ layer_agent_config_def = {
     },
     "layer_agent_2": {
         "system_prompt": "Respond with a thought and then your response to the question. {helper_response}",
-        "model_name": "gemma-7b-it",
+        "model_name": "gemma2-9b-it",
         "temperature": 0.7
     },
     "layer_agent_3": {
@@ -138,7 +138,6 @@ st.set_page_config(
 valid_model_names = [
     'llama-3.1-8b-instant',
     'llama-3.3-70b-versatile',
-    'gemma-7b-it',
     'gemma2-9b-it',
     'mixtral-8x7b-32768'
 ]