agent eval tutorial nit

docs/evaluation/tutorials/agents.mdx

@@ -21,7 +21,7 @@ We'll build our agent using [LangGraph](https://github.com/langchain-ai/langgrap
 Let's install the required dependencies:
 
 ```bash
-pip install -U langgraph langchain langchain-community langchain-openai
+pip install -U langgraph langchain langchain-openai
 ```
 
 Let's set up environment variables for OpenAI and <RegionalUrl text='LangSmith'/>: