Remove some warnings (#5391)

* Remove unused Dependency fields

* Remove noop null check

Content.Server/Chemistry/EntitySystems/ReagentDispenserSystem.cs

@@ -13,7 +13,6 @@ namespace Content.Server.Chemistry.EntitySystems
     [UsedImplicitly]
     public class ReagentDispenserSystem : EntitySystem
     {
-        [Dependency] private readonly SolutionContainerSystem _solutionContainerSystem = default!;
         [Dependency] private readonly ActionBlockerSystem _actionBlockerSystem = default!;
 
         public override void Initialize()

Content.Server/Construction/Components/MachineComponent.cs

@@ -88,9 +88,6 @@ namespace Content.Server.Construction.Components
             {
                 var stack = EntitySystem.Get<StackSystem>().Spawn(amount, stackType, Owner.Transform.Coordinates);
 
-                if (stack == null)
-                    throw new Exception($"Couldn't spawn stack of type {stackType}!");
-
                 if (!partContainer.Insert(Owner.EntityManager.GetEntity(stack)))
                     throw new Exception($"Couldn't insert machine material of type {stackType} to machine with prototype {Owner.Prototype?.ID ?? "N/A"}");
             }

Content.Server/Disposal/Tube/Components/DisposalTubeComponent.cs

@@ -23,8 +23,6 @@ namespace Content.Server.Disposal.Tube.Components
 {
     public abstract class DisposalTubeComponent : Component, IDisposalTubeComponent, IBreakAct
     {
-        [Dependency] private readonly IMapManager _mapManager = default!;
-
         public static readonly TimeSpan ClangDelay = TimeSpan.FromSeconds(0.5);
         public TimeSpan LastClang;
 

Content.Server/Electrocution/ElectrocutionSystem.cs

@@ -39,7 +39,6 @@ namespace Content.Server.Electrocution
         [Dependency] private readonly IEntityLookup _entityLookup = default!;
         [Dependency] private readonly IRobustRandom _random = default!;
         [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
-        [Dependency] private readonly IConsoleHost _consoleHost = default!;
         [Dependency] private readonly StatusEffectsSystem _statusEffectsSystem = default!;
         [Dependency] private readonly SharedJitteringSystem _jitteringSystem = default!;
         [Dependency] private readonly SharedStunSystem _stunSystem = default!;

Content.Server/Pointing/EntitySystems/PointingSystem.cs

@@ -32,7 +32,6 @@ namespace Content.Server.Pointing.EntitySystems
         [Dependency] private readonly IPlayerManager _playerManager = default!;
         [Dependency] private readonly ITileDefinitionManager _tileDefinitionManager = default!;
         [Dependency] private readonly IGameTiming _gameTiming = default!;
-        [Dependency] private readonly ActionBlockerSystem _actionBlockerSystem = default!;
         [Dependency] private readonly RotateToFaceSystem _rotateToFaceSystem = default!;
 
         private static readonly TimeSpan PointDelay = TimeSpan.FromSeconds(0.5f);

Content.Server/Verbs/VerbSystem.cs

@@ -8,8 +8,6 @@ namespace Content.Server.Verbs
 {
     public sealed class VerbSystem : SharedVerbSystem
     {
-        [Dependency] private readonly IPlayerManager _playerManager = default!;
-
         public override void Initialize()
         {
             base.Initialize();