refactor(dossier): remove old section code

app/models/champ.rb

@@ -99,10 +99,6 @@ class Champ < ApplicationRecord
     [row_id, stable_id].compact
   end
 
-  def sections
-    @sections ||= dossier.sections_for(self)
-  end
-
   # used for the `required` html attribute
   # check visibility to avoid hidden required input
   # which prevent the form from being sent.

app/models/champs/header_section_champ.rb

@@ -16,8 +16,4 @@ class Champs::HeaderSectionChamp < Champ
   def libelle_with_section_index?
     libelle =~ /^\d/
   end
-
-  def section_index
-    sections.index(self) + 1
-  end
 end

app/models/concerns/dossier_sections_concern.rb

@@ -6,11 +6,11 @@ module DossierSectionsConcern
       @sections = Hash.new do |hash, parent|
         case parent
         when :public
-          hash[parent] = champs_public.filter(&:header_section?)
+          hash[parent] = champs_for_revision(:public, true).filter(&:header_section?)
         when :private
-          hash[parent] = champs_private.filter(&:header_section?)
+          hash[parent] = champs_for_revision(:private, true).filter(&:header_section?)
         else
-          hash[parent] = parent.champs.filter(&:header_section?)
+          hash[parent] = champs_for_revision(parent.type_de_champ).filter(&:header_section?)
         end
       end
       @sections[champ.parent || (champ.public? ? :public : :private)]
@@ -23,7 +23,7 @@ module DossierSectionsConcern
     end
 
     def index_for_section_header(champ)
-      champs = champ.private? ? champs_private : champs_public
+      champs = champ.private? ? champs_for_revision(:private, true) : champs_for_revision(:public, true)
       index = 1
       champs.each do |c|
         if c.repetition?