Cleanup warnings: CS0414 (#39748)

* Cleanup

* Fix

Content.Server/Singularity/EntitySystems/EmitterSystem.cs

@@ -28,7 +28,6 @@ namespace Content.Server.Singularity.EntitySystems
     public sealed class EmitterSystem : SharedEmitterSystem
     {
         [Dependency] private readonly IRobustRandom _random = default!;
-        [Dependency] private readonly IPrototypeManager _prototype = default!;
         [Dependency] private readonly IAdminLogManager _adminLogger = default!;
         [Dependency] private readonly SharedAppearanceSystem _appearance = default!;
         [Dependency] private readonly SharedPopupSystem _popup = default!;