decal system & crayons (#5183)

Co-authored-by: Paul <ritter.paul1+git@googlemail.com>

Content.Shared/Crayon/SharedCrayonComponent.cs

@@ -72,16 +72,4 @@ namespace Content.Shared.Crayon
             Color = color;
         }
     }
-
-    [Serializable, NetSerializable, Prototype("crayonDecal")]
-    public class CrayonDecalPrototype : IPrototype
-    {
-        [ViewVariables]
-        [DataField("id", required: true)]
-        public string ID { get; } = default!;
-
-        [DataField("spritePath")] public string SpritePath { get; } = string.Empty;
-
-        [DataField("decals")] public List<string> Decals { get; } = new();
-    }
 }