Delete session after removing dormant multigrid controller

Author: d-j-hatton

src/murfey/instrument_server/api.py

@@ -147,6 +147,10 @@ def start_multigrid_watcher(
     for sid, controller in controllers.items():
         if controller.dormant:
             del controllers[sid]
+            requests.delete(
+                f"{_get_murfey_url()}/sessions/{sid}",
+                headers={"Authorization": f"Bearer {tokens[sid]}"},
+            )
     controllers[session_id] = MultigridController(
         [],
         watcher_spec.visit,