Remove "agent.state" argument from "agent.python_executor" args

The "agent.python_executor" method expects a single string input and runs into error as 2 inputs are given. The agent.state is empty dict at that point and removing it doesn't affect it as it's anyway initialised internally as empty dict.

unit2/smolagents/vision_web_browser.py

@@ -199,7 +199,7 @@ def main():
     agent = initialize_agent(model)
 
     # Run the agent with the provided prompt
-    agent.python_executor("from helium import *", agent.state)
+    agent.python_executor("from helium import *")
     agent.run(args.prompt + helium_instructions)