Cleanup unused/redundant dependencies (#38099)

Content.Server/Procedural/DungeonSystem.cs

@@ -29,7 +29,6 @@ public sealed partial class DungeonSystem : SharedDungeonSystem
 {
     [Dependency] private readonly IConfigurationManager _configManager = default!;
     [Dependency] private readonly IConsoleHost _console = default!;
-    [Dependency] private readonly IMapManager _mapManager = default!;
     [Dependency] private readonly IPrototypeManager _prototype = default!;
     [Dependency] private readonly IRobustRandom _random = default!;
     [Dependency] private readonly ITileDefinitionManager _tileDefManager = default!;