Remove some warnings (#5391)

* Remove unused Dependency fields

* Remove noop null check

Content.Client/Administration/AdminSystem.cs

@@ -14,8 +14,6 @@ namespace Content.Client.Administration
 {
     public partial class AdminSystem : EntitySystem
     {
-        [Dependency] private readonly IPlayerManager _playerManager = default!;
-
         public event Action<List<PlayerInfo>>? PlayerListChanged;
 
         private Dictionary<NetUserId, PlayerInfo>? _playerList;

Content.Client/Atmos/Overlays/AtmosDebugOverlay.cs

@@ -16,7 +16,6 @@ namespace Content.Client.Atmos.Overlays
 
         [Dependency] private readonly IMapManager _mapManager = default!;
         [Dependency] private readonly IEyeManager _eyeManager = default!;
-        [Dependency] private readonly IClyde _clyde = default!;
 
         public override OverlaySpace Space => OverlaySpace.WorldSpace;
 

Content.Client/Construction/UI/ConstructionMenuPresenter.cs

@@ -29,7 +29,6 @@ namespace Content.Client.Construction.UI
     {
         [Dependency] private readonly IEntitySystemManager _systemManager = default!;
         [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
-        [Dependency] private readonly IResourceCache _resourceCache = default!;
         [Dependency] private readonly IPlacementManager _placementManager = default!;
 
         private readonly IGameHud _gameHud;

Content.Client/Items/Managers/ItemSlotManager.cs

@@ -26,7 +26,6 @@ namespace Content.Client.Items.Managers
     {
         [Dependency] private readonly IGameTiming _gameTiming = default!;
         [Dependency] private readonly IEntitySystemManager _entitySystemManager = default!;
-        [Dependency] private readonly IUserInterfaceManager _uiMgr = default!;
         [Dependency] private readonly IEntityManager _entityManager = default!;
 
         private readonly HashSet<EntityUid> _highlightEntities = new();