Fix some build warnings (#6832)

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

Content.Server/Chemistry/EntitySystems/ChemistrySystem.cs

@@ -10,7 +10,6 @@ namespace Content.Server.Chemistry.EntitySystems;
 
 public sealed partial class ChemistrySystem : EntitySystem
 {
-    [Dependency] private readonly ActionBlockerSystem _blocker = default!;
     [Dependency] private readonly AdminLogSystem _logs = default!;
     [Dependency] private readonly BloodstreamSystem _blood = default!;
     [Dependency] private readonly DoAfterSystem _doAfter = default!;