Don't show approval on admin user page if the site doesn't require approval of users (must_approve_users)

app/assets/javascripts/admin/controllers/admin_user_controller.js

@@ -22,5 +22,9 @@ Discourse.AdminUserController = Discourse.ObjectController.extend({
     });
 
     this.toggleTitleEdit();
-  }
+  },
+
+  showApproval: function() {
+    return Discourse.SiteSettings.must_approve_users;
+  }.property()
 });

app/assets/javascripts/admin/templates/user.js.handlebars

@@ -64,6 +64,7 @@
 <section class='details'>
   <h1>{{i18n admin.user.permissions}}</h1>
 
+  {{#if showApproval}}
     <div class='display-row'>
       <div class='field'>{{i18n admin.users.approved}}</div>
       <div class='value'>
@@ -90,6 +91,7 @@
         {{/if}}
       </div>
     </div>
+  {{/if}}
 
   <div class='display-row'>
     <div class='field'>{{i18n admin.users.active}}</div>