FIX: Can't seem to use ES6 in this file

app/assets/javascripts/discourse-common/lib/raw-handlebars.js.es6

@@ -1,5 +1,3 @@
-import deprecated from 'discourse-common/lib/deprecated';
-
 // This is a mechanism for quickly rendering templates which is Ember aware
 // templates are highly compatible with Ember so you don't need to worry about calling "get"
 // and computed properties function, additionally it uses stringParams like Ember does
@@ -21,7 +19,6 @@ RawHandlebars.helpers['get'] = function(context, options) {
   var val = firstContext[context];
 
   if (context.indexOf('controller') === 0) {
-    deprecated("Don't `use controller` in raw templates");
     context = context.replace(/^controller\./, '');
   }