Resolve all non-obsoleting warnings in content (#27934)

* Resolve all non-obsoleting warnings in content

* Update ClientGameTicker.cs

* Update SkeletonAccentSystem.cs

* Update BwoinkSystem.cs

Content.Client/Robotics/UI/RoboticsConsoleWindow.xaml.cs

@@ -17,7 +17,6 @@ public sealed partial class RoboticsConsoleWindow : FancyWindow
 {
     [Dependency] private readonly IEntityManager _entMan = default!;
     [Dependency] private readonly IGameTiming _timing = default!;
-    [Dependency] private readonly IPrototypeManager _proto = default!;
     private readonly LockSystem _lock;
     private readonly SpriteSystem _sprite;