remove changes in agent folder

src/agent/custom_agent.py

@@ -282,4 +282,4 @@ class CustomAgent(Agent):
                 await self.browser_context.close()
 
             if not self.injected_browser and self.browser:
-                await self.browser.close()
+                await self.browser.close()

src/agent/custom_massage_manager.py

@@ -118,4 +118,4 @@ class CustomMassageManager(MessageManager):
             max_error_length=self.max_error_length,
             step_info=step_info,
         ).get_user_message()
-        self._add_message_with_tokens(state_message)
+        self._add_message_with_tokens(state_message)