fix: Remove incorrect dbus_service import and decorator

Co-authored-by: aider (gemini/gemini-2.5-pro) <aider@aider.chat>

main.py

@@ -11,7 +11,7 @@ import json
 import asyncio
 from aiomqtt import Client
 from dbus_next.aio import MessageBus
-from dbus_next.service import ServiceInterface, method, dbus_service
+from dbus_next.service import ServiceInterface, method
 from dbus_next import Variant
 
 
@@ -24,7 +24,6 @@ AGENT_MANAGER_IFACE = 'org.bluez.AgentManager1'
 AGENT_PATH = '/dev/what/agent'
 CAPABILITY = 'NoInputNoOutput'
 
-@dbus_service(ifaces=[AGENT_IFACE])
 class Agent(ServiceInterface):
     def __init__(self, interface_name):
         super().__init__(interface_name)