Update core.js

Author: Lauren McCarthy

src/core/core.js

@@ -11,7 +11,6 @@ define(function (require) {
   require('shim');
 
   // Core needs the PVariables object
-  // TODO: ???
   var constants = require('constants');
 
   /**
@@ -467,4 +466,4 @@ define(function (require) {
 
   return p5;
 
-});
+});