Apply suggestion from @phillipleblanc

Author: phillipleblanc

ballista/scheduler/src/scheduler_server/query_stage_scheduler.rs

@@ -329,15 +329,6 @@ impl<T: 'static + AsLogicalPlan, U: 'static + AsExecutionPlan>
         self.metrics_collector
             .set_pending_jobs_queue_size(pending_jobs as u64);
 
-        // NOTE: We intentionally do NOT call total_pending_tasks() here.
-        // That method iterates over all active jobs and acquires read locks on each
-        // execution graph, which causes lock contention with concurrent poll_work
-        // calls that acquire write locks during task binding. This was causing
-        // deadlocks and executor timeouts under load.
-        //
-        // The pending_jobs metric above provides sufficient visibility into queue depth.
-        // If detailed pending task counts are needed, they should be collected
-        // periodically in a background task, not on every event.
 
         Ok(())
     }