Revert "fixes a bunch of warnings"

This reverts commit d4d85b663f.

Content.Client/AI/ClientPathfindingDebugSystem.cs

@@ -18,6 +18,7 @@ namespace Content.Client.AI
 #if DEBUG
     public class ClientPathfindingDebugSystem : EntitySystem
     {
+        [Dependency] private readonly IOverlayManager _overlayManager = default!;
         [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
         [Dependency] private readonly IEyeManager _eyeManager = default!;
         [Dependency] private readonly IPlayerManager _playerManager = default!;