Fix onsite settings view

app/views/contests/settings_general_edit.html.slim

@@ -17,12 +17,6 @@
       .form-floating
         = form.select :lang, Languages::AVAILABLE_LANGUAGES.map { |lang| [ lang[:name], lang[:id] ] }, {}, class: "form-select"
         = form.label :lang
-  .row.mt-2.mb-3
-    .col
-      .form-floating
-        = form.text_field :code, autocomplete: "off", class: "form-control"
-        = form.label :code, class: "required"
-        .form-text = t("activerecord.attributes.contest.code_description")
   .row.mb-3 style="display: none"
     .col
       .form-check.form-switch

app/views/contests/settings_onsite_edit.html.slim

@@ -1,6 +1,6 @@
 = render "params_nav"
 
-= form_with model: @contest, url: "/contests/#{@contest.id}/settings/general" do |form|
+= form_with model: @contest, url: "/contests/#{@contest.id}/settings/onsite" do |form|
   .row.mt-2.mb-3
     .col
       .form-floating