remove duplicate editors.js in asset bundles

mkt/asset_bundles.py

@@ -301,7 +301,6 @@ JS = {
         'js/zamboni/storage.js',
         'js/zamboni/editors.js',
         'js/mkt/reviewers.js',
-        'js/zamboni/editors.js',
         'js/devreg/menupicker.js',
         'js/devreg/expandable.js',
         'js/devreg/reviewers_init.js',