From 48ddcbeb1bf7a56efb78c419b772b91e14cc118a Mon Sep 17 00:00:00 2001
From: samreid <reids@colorado.edu>
Date: Tue, 5 Sep 2017 12:50:49 -0600
Subject: [PATCH] Removed unused property, see
 https://github.com/phetsims/circuit-construction-kit-common/issues/317

---
 js/view/CircuitLayerNode.js | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/js/view/CircuitLayerNode.js b/js/view/CircuitLayerNode.js
index 7f063fa7..35b275b1 100644
--- a/js/view/CircuitLayerNode.js
+++ b/js/view/CircuitLayerNode.js
@@ -376,10 +376,6 @@ define( function( require ) {
     circuit.charges.addItemAddedListener( function( charge ) {
       self.chargeLayer.addChild( new ChargeNode( charge ) );
     } );
-
-    // @public - Filled in by black box study, if it is running.
-    //REVIEW: Needs type docs? What's going on here?
-    this.blackBoxNode = null;
   }
 
   circuitConstructionKitCommon.register( 'CircuitLayerNode', CircuitLayerNode );