Move static container helper functions to container system (#6382)

Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>

Content.Server/Examine/ExamineSystem.cs

@@ -2,7 +2,6 @@ using Content.Shared.Examine;
 using JetBrains.Annotations;
 using Robust.Server.Player;
 using Robust.Shared.GameObjects;
-using Robust.Shared.IoC;
 using Robust.Shared.Localization;
 using Robust.Shared.Utility;
 
@@ -24,8 +23,6 @@ namespace Content.Server.Examine
             base.Initialize();
 
             SubscribeNetworkEvent<ExamineSystemMessages.RequestExamineInfoMessage>(ExamineInfoRequest);
-
-            IoCManager.InjectDependencies(this);
         }
 
         private void ExamineInfoRequest(ExamineSystemMessages.RequestExamineInfoMessage request, EntitySessionEventArgs eventArgs)