chore: cleanup

made llm get url from settings
cleanup uneceserry fstring

ref: N25B-207

src/control_backend/agents/bdi/bdi_core.py

@@ -59,10 +59,9 @@ class BDICoreAgent(BDIAgent):
         class SendBehaviour(OneShotBehaviour):
             async def run(self) -> None:
                 msg = Message(
-                    to=f"{settings.agent_settings.test_agent_name}@"
-                       f"{settings.agent_settings.host}",
-                    body=text,
-                    thread="llm_request",
+                    to= settings.agent_settings.test_agent_name + '@' + settings.agent_settings.host,
+                    body= text,
+                    thread= "llm_request",
                 )
                 msg.set_metadata("performative", "inform")
                 await self.send(msg)