Don't need to filter these (they are not there)

SlicerConfiguration/SlicerMapping/EngineMappingSlic3r.cs

@@ -78,7 +78,7 @@ namespace MatterHackers.MatterControl.SlicerConfiguration
 		public override bool MapContains(string key)
 		{
 			// Visible items are anything not in hiddenSettings or that does not start with 'MatterControl.'
-			return !hiddenSettings.Contains(key) && !key.StartsWith("MatterControl.");
+			return !hiddenSettings.Contains(key);
 		}
 	}
 }