Remove non-existant import

services/web/public/stylesheets/app/editor.less

@@ -12,7 +12,6 @@
 @import "./editor/online-users.less";
 @import "./editor/hotkeys.less";
 @import "./editor/review-panel.less";
-@import "./editor/feature-onboarding.less";
 
 @keyframes blink {
 	0% {