procedure: remove UI to edit the european flag

This is an option we want to deprecate, and remove entirely in the
future.

Admins can still add the EU flag manually to their uploaded logo.

app/javascript/new_design/procedure-edit.js

@@ -1,4 +1,4 @@
-import { show, hide, delegate } from '@utils';
+import { delegate } from '@utils';
 
 function syncInputToElement(fromSelector, toSelector) {
   const fromElement = document.querySelector(fromSelector);
@@ -11,14 +11,8 @@ function syncInputToElement(fromSelector, toSelector) {
 function syncFormToPreview() {
   syncInputToElement('#procedure_libelle', 'h2.procedure-title');
   syncInputToElement('#procedure_description', '.procedure-description-body');
-
-  const euroFlagCheckbox = document.querySelector('#procedure_euro_flag');
-  const euroFlagLogo = document.querySelector('#euro_flag');
-  if (euroFlagCheckbox && euroFlagLogo) {
-    euroFlagCheckbox.checked ? show(euroFlagLogo) : hide(euroFlagLogo);
-  }
 }
 
 delegate('input', '#procedure-edit #procedure_libelle', syncFormToPreview);
 delegate('input', '#procedure-edit #procedure_description', syncFormToPreview);
-delegate('change', '#procedure-edit #procedure_euro_flag', syncFormToPreview);
+

app/views/layouts/commencer/_procedure_description.html.haml

@@ -1,6 +1,6 @@
 .procedure-logos
   = image_tag procedure.logo_url
-  - if procedure.euro_flag || (defined?(force_euro_flag) && force_euro_flag == true)
+  - if procedure.euro_flag
     = image_tag("flag_of_europe.svg", id: 'euro_flag', class: (!procedure.euro_flag ? "hidden" : ""))
 %h2.procedure-title
   = procedure.libelle

app/views/new_administrateur/procedures/_informations.html.haml

@@ -29,12 +29,8 @@
         %i
           Fichier accepté : JPG / JPEG / PNG
 
-      = f.label :euro_flag do
-        = f.check_box :euro_flag
-        Afficher aussi le drapeau européen
-
     .column.procedure-preview
-      = render partial: 'layouts/commencer/procedure_description', locals: { procedure: @procedure, force_euro_flag: true }
+      = render partial: 'layouts/commencer/procedure_description', locals: { procedure: @procedure }
 
 .container
   - if !@procedure.locked?