Actually fix round restart audio this time (#24754)

In which I'm a goober and don't clean up after
myself and accientally don't fix the issue I tried
to fix in my last round restart PR.

The audio is now maintained just like music during
restarts (yippee to ContentAudioSystem::OnRoundRestart)

This needs a refactor but at least the defect is fixed now.

Content.Server/GameTicking/GameTicker.RoundFlow.cs

@@ -525,9 +525,6 @@ namespace Content.Server.GameTicking
             {
                 _playerGameStatuses[session.UserId] = LobbyEnabled ? PlayerGameStatus.NotReadyToPlay : PlayerGameStatus.ReadyToPlay;
             }
-
-            // Put a bangin' donk on it.
-            _audio.PlayGlobal(_audio.GetSound(new SoundCollectionSpecifier("RoundEnd")), Filter.Broadcast(), true);
         }
 
         public bool DelayStart(TimeSpan time)