Fix station income instantly accumulating roundstart (#36572)

Fix station money accumulating roundstart

Content.Server/Cargo/Systems/CargoSystem.cs

@@ -17,14 +17,12 @@ using JetBrains.Annotations;
 using Robust.Server.GameObjects;
 using Robust.Shared.Audio.Systems;
 using Robust.Shared.Prototypes;
-using Robust.Shared.Timing;
 using Robust.Shared.Random;
 
 namespace Content.Server.Cargo.Systems;
 
 public sealed partial class CargoSystem : SharedCargoSystem
 {
-    [Dependency] private readonly IGameTiming _timing = default!;
     [Dependency] private readonly IPrototypeManager _protoMan = default!;
     [Dependency] private readonly IRobustRandom _random = default!;
     [Dependency] private readonly ISharedAdminLogManager _adminLogger = default!;