refactor: drop unused logger/logging (#1926)

examples/clients/sse-polling-client/mcp_sse_polling_client/main.py

@@ -21,8 +21,6 @@ import click
 from mcp import ClientSession
 from mcp.client.streamable_http import streamable_http_client
 
-logger = logging.getLogger(__name__)
-
 
 async def run_demo(url: str, items: int, checkpoint_every: int) -> None:
     """Run the SSE polling demo."""

examples/servers/simple-auth/mcp_simple_auth/simple_auth_provider.py

@@ -8,7 +8,6 @@ This is not a production-ready implementation.
 
 """
 
-import logging
 import secrets
 import time
 from typing import Any
@@ -29,8 +28,6 @@ from mcp.server.auth.provider import (
 )
 from mcp.shared.auth import OAuthClientInformationFull, OAuthToken
 
-logger = logging.getLogger(__name__)
-
 
 class SimpleAuthSettings(BaseSettings):
     """Simple OAuth settings for demo purposes."""

src/mcp/client/auth/utils.py

@@ -1,4 +1,3 @@
-import logging
 import re
 from urllib.parse import urljoin, urlparse
 
@@ -16,8 +15,6 @@ from mcp.shared.auth import (
 )
 from mcp.types import LATEST_PROTOCOL_VERSION
 
-logger = logging.getLogger(__name__)
-
 
 def extract_field_from_www_auth(response: Response, field_name: str) -> str | None:
     """Extract field from WWW-Authenticate header.

src/mcp/client/client.py

@@ -2,7 +2,6 @@
 
 from __future__ import annotations
 
-import logging
 from contextlib import AsyncExitStack
 from typing import Any
 
@@ -22,8 +21,6 @@ from mcp.server import Server
 from mcp.server.fastmcp import FastMCP
 from mcp.shared.session import ProgressFnT
 
-logger = logging.getLogger(__name__)
-
 
 class Client:
     """A high-level MCP client for connecting to MCP servers.

src/mcp/server/websocket.py

@@ -1,4 +1,3 @@
-import logging
 from contextlib import asynccontextmanager
 
 import anyio
@@ -10,8 +9,6 @@ from starlette.websockets import WebSocket
 import mcp.types as types
 from mcp.shared.message import SessionMessage
 
-logger = logging.getLogger(__name__)
-
 
 @asynccontextmanager  # pragma: no cover
 async def websocket_server(scope: Scope, receive: Receive, send: Send):

tests/server/test_streamable_http_security.py

@@ -1,6 +1,5 @@
 """Tests for StreamableHTTP server DNS rebinding protection."""
 
-import logging
 import multiprocessing
 import socket
 from collections.abc import AsyncGenerator
@@ -19,7 +18,6 @@ from mcp.server.transport_security import TransportSecuritySettings
 from mcp.types import Tool
 from tests.test_helpers import wait_for_server
 
-logger = logging.getLogger(__name__)
 SERVER_NAME = "test_streamable_http_security_server"