Remove trailing comment from idleThreshold property

Author: rcalicdan

src/EventLoop/Handlers/ActivityHandler.php

@@ -5,7 +5,7 @@
 final class ActivityHandler
 {
     private float $lastActivity = 0.0;
-    private int $idleThreshold = 5; // seconds
+    private int $idleThreshold = 5; 
     private int $activityCounter = 0;
     private float $avgActivityInterval = 0.0;