Fix warning CS0414 instances (#36832)

Fix warning cs0414 instances

Content.Shared/VendingMachines/SharedVendingMachineSystem.cs

@@ -22,7 +22,6 @@ namespace Content.Shared.VendingMachines;
 public abstract partial class SharedVendingMachineSystem : EntitySystem
 {
     [Dependency] protected readonly IGameTiming Timing = default!;
-    [Dependency] private   readonly INetManager _net = default!;
     [Dependency] protected readonly IPrototypeManager PrototypeManager = default!;
     [Dependency] private   readonly AccessReaderSystem _accessReader = default!;
     [Dependency] private   readonly SharedAppearanceSystem _appearanceSystem = default!;