docs: stop presenting the in-memory client as the way to connect (#3443)

docs_src/protocol_versions/tutorial002.py

@@ -1,15 +1,12 @@
+import anyio
+
 from mcp import Client
-from mcp.server import MCPServer
-
-mcp = MCPServer("Bookshop")
-
-
-@mcp.tool()
-def search_books(query: str) -> str:
-    """Search the catalog by title or author."""
-    return f"Found 3 books matching {query!r}."
 
 
 async def main() -> None:
-    async with Client(mcp, mode="legacy") as client:
+    async with Client("http://localhost:8000/mcp", mode="legacy") as client:
         print(client.protocol_version)
+
+
+if __name__ == "__main__":
+    anyio.run(main)