remove .icon-fw

apps/app/src/styles/style-app.scss

@@ -82,13 +82,6 @@
   }
 }
 
-// transplant from FontAwesome
-.icon-fw {
-  display: inline-block;
-  width: 1.4em;
-  text-align: left;
-}
-
 .cmd-key.mac {
   &:after {
     content: '⌘';