Update gradio-client.mdx

import code refactor

Author: karenwky

units/en/unit2/gradio-client.mdx

@@ -78,8 +78,7 @@ Here's the complete example of the MCP Client in Gradio:
 import gradio as gr
 
 from mcp.client.stdio import StdioServerParameters
-from smolagents import ToolCollection, CodeAgent
-from smolagents import CodeAgent, InferenceClientModel
+from smolagents import InferenceClientModel, CodeAgent, ToolCollection
 from smolagents.mcp_client import MCPClient