Fix some build warnings (#6832)

Co-authored-by: metalgearsloth <metalgearsloth@gmail.com>

Content.Server/WireHacking/WireHackingSystem.cs

@@ -19,7 +19,6 @@ namespace Content.Server.WireHacking
     public sealed class WireHackingSystem : EntitySystem
     {
         [Dependency] private readonly IRobustRandom _random = default!;
-        [Dependency] private readonly ActionBlockerSystem _blocker = default!;
         [Dependency] private readonly ToolSystem _tools = default!;
 
         [ViewVariables] private readonly Dictionary<string, WireLayout> _layouts =