From f79120069f8655da45ebc565500ad5cb6e840998 Mon Sep 17 00:00:00 2001
From: denz1994 <denz1994@gmail.com>
Date: Wed, 30 Jan 2019 11:11:17 -0500
Subject: [PATCH] Addressed REVIEW: Removed unused code.
 https://github.com/phetsims/masses-and-springs-basics/issues/48

---
 js/common/model/Spring.js | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/js/common/model/Spring.js b/js/common/model/Spring.js
index ae9e4b28..9615fa69 100644
--- a/js/common/model/Spring.js
+++ b/js/common/model/Spring.js
@@ -19,10 +19,6 @@ define( function( require ) {
   var inherit = require( 'PHET_CORE/inherit' );
   var massesAndSprings = require( 'MASSES_AND_SPRINGS/massesAndSprings' );
   var MassesAndSpringsConstants = require( 'MASSES_AND_SPRINGS/common/MassesAndSpringsConstants' );
-  // REVIEW: Can we remove commented-out lines?
-  // var Mass = require( 'MASSES_AND_SPRINGS/common/model/Mass' );
-  // var MassIO = require( 'MASSES_AND_SPRINGS/common/model/MassIO' );
-  // var NullableIO = require( 'TANDEM/types/NullableIO' );
   var NumberIO = require( 'TANDEM/types/NumberIO' );
   var NumberProperty = require( 'AXON/NumberProperty' );
   var Property = require( 'AXON/Property' );