Delete fetched dashboard correctly.

brian_dashboard_manager/grafana/dashboard.py

@@ -34,7 +34,8 @@ def delete_dashboard(request: TokenRequest, dashboard, folder_id=None):
             dash = _search_dashboard(request, dashboard, folder_id)
             if dash is None:
                 return True
-            r = request.delete(f'api/dashboards/uid/{dash.get("uid")}')
+            _delete_dashboard(request, dash.get(
+                'dashboard', {}).get('uid', ''))
 
         logger.info(f'Deleted dashboard: {dashboard.get("title")}')
         return r is not None