Revert "Update submodule to 175.0.0 (#21318)" (#21319)

Content.Server/Audio/ContentAudioSystem.cs

@@ -1,41 +1,8 @@
-using Content.Server.GameTicking.Events;
 using Content.Shared.Audio;
-using Robust.Server.Audio;
-using Robust.Shared.Audio;
-using Robust.Shared.Prototypes;
 
 namespace Content.Server.Audio;
 
 public sealed class ContentAudioSystem : SharedContentAudioSystem
 {
-    [Dependency] private readonly AudioSystem _serverAudio = default!;
-    [Dependency] private readonly IPrototypeManager _protoManager = default!;
 
-    public override void Initialize()
-    {
-        base.Initialize();
-        SubscribeLocalEvent<RoundStartingEvent>(OnRoundStart);
-        _protoManager.PrototypesReloaded += OnProtoReload;
-    }
-
-    private void OnProtoReload(PrototypesReloadedEventArgs obj)
-    {
-        if (!obj.ByType.ContainsKey(typeof(AudioPresetPrototype)))
-            return;
-
-        _serverAudio.ReloadPresets();
-    }
-
-    public override void Shutdown()
-    {
-        base.Shutdown();
-        _protoManager.PrototypesReloaded -= OnProtoReload;
-    }
-
-    private void OnRoundStart(RoundStartingEvent ev)
-    {
-        // On cleanup all entities get purged so need to ensure audio presets are still loaded
-        // yeah it's whacky af.
-        _serverAudio.ReloadPresets();
-    }
 }