more component ref removal + combining server/client comps (#13178)

Co-authored-by: DrSmugleaf <DrSmugleaf@users.noreply.github.com>

Content.Client/VendingMachines/VendingMachineSystem.cs

@@ -137,19 +137,3 @@ public sealed class VendingMachineSystem : SharedVendingMachineSystem
         sprite.LayerSetVisible(actualLayer, false);
     }
 }
-
-public enum VendingMachineVisualLayers : byte
-{
-    /// <summary>
-    /// Off / Broken. The other layers will overlay this if the machine is on.
-    /// </summary>
-    Base,
-    /// <summary>
-    /// Normal / Deny / Eject
-    /// </summary>
-    BaseUnshaded,
-    /// <summary>
-    /// Screens that are persistent (where the machine is not off or broken)
-    /// </summary>
-    Screen
-}