Admin spring cleaning (#36190)

* Cleanup warnings in administration

* Job command cleanup

* Reverting already implemented changes

Content.Server/Administration/Commands/ForceGhostCommand.cs

@@ -11,7 +11,6 @@ namespace Content.Server.Administration.Commands;
 [AdminCommand(AdminFlags.Admin)]
 public sealed class ForceGhostCommand : LocalizedEntityCommands
 {
-    [Dependency] private readonly IEntityManager _entityManager = default!;
     [Dependency] private readonly IPlayerManager _playerManager = default!;
     [Dependency] private readonly GameTicker _gameTicker = default!;
     [Dependency] private readonly SharedMindSystem _mind = default!;