Core - Refactored layout loading, fixing LED images

Core - Make a better effort at removing orphaned devices from device providers that failed to load

src/Artemis.Core/Services/Interfaces/IRenderService.cs

@@ -21,11 +21,6 @@ public interface IRenderService : IArtemisService
     /// </summary>
     RGBSurface Surface { get; }
 
-    /// <summary>
-    ///     Gets a list of registered renderers.
-    /// </summary>
-    List<IRenderer> Renderers { get; }
-
     /// <summary>
     ///     Gets or sets a boolean indicating whether rendering is paused.
     /// </summary>