Cleanup warnings: CS0414 (#38793)

Cleanup

Content.Server/Electrocution/ElectrocutionSystem.cs

@@ -40,7 +40,6 @@ namespace Content.Server.Electrocution;
 public sealed class ElectrocutionSystem : SharedElectrocutionSystem
 {
     [Dependency] private readonly IAdminLogManager _adminLogger = default!;
-    [Dependency] private readonly IMapManager _mapManager = default!;
     [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
     [Dependency] private readonly IRobustRandom _random = default!;
     [Dependency] private readonly DamageableSystem _damageable = default!;