Fix a bunch of compiler warnings (#10518)

Content.Server/Explosion/EntitySystems/ExplosionSystem.cs

@@ -32,7 +32,6 @@ public sealed partial class ExplosionSystem : EntitySystem
     [Dependency] private readonly DamageableSystem _damageableSystem = default!;
     [Dependency] private readonly NodeGroupSystem _nodeGroupSystem = default!;
     [Dependency] private readonly SharedCameraRecoilSystem _recoilSystem = default!;
-    [Dependency] private readonly EntityLookupSystem _entityLookup = default!;
     [Dependency] private readonly IAdminLogManager _adminLogger = default!;
     [Dependency] private readonly ThrowingSystem _throwingSystem = default!;
     [Dependency] private readonly SharedTransformSystem _transformSystem = default!;