Remove webkit-appearance: none

This is the default anyway, and we don't need this for anything specific.

app/assets/stylesheets/common.scss

@@ -80,7 +80,6 @@ small, aside {
 a {
   color: #24d;
   text-decoration: none;
-  -webkit-appearance: none;
   outline: 0;
   &:hover {
     text-decoration: underline;

app/assets/stylesheets/small.scss

@@ -3,12 +3,6 @@
 /* Styles specific to a small screen, such as iPhone, Android, etc... */
 
 body.small {
-
-  input[type="submit"],
-  input[type="text"] {
-    -webkit-appearance: none;
-  }
-
   #menu-icon {
     display: inline-block !important;
   }