[fix #2985] del champ_linked_dropdown in feature

app/services/types_de_champ_service.rb

@@ -4,7 +4,6 @@ class TypesDeChampService
   TOGGLES = {
     TypeDeChamp.type_champs.fetch(:piece_justificative)   => :champ_pj?,
     TypeDeChamp.type_champs.fetch(:siret)                 => :champ_siret?,
-    TypeDeChamp.type_champs.fetch(:linked_drop_down_list) => :champ_linked_dropdown?,
     TypeDeChamp.type_champs.fetch(:integer_number)        => :champ_integer_number?
   }
 

config/features.rb

@@ -11,8 +11,6 @@ Flipflop.configure do
       title: "Champ pièce justificative"
     feature :champ_siret,
       title: "Champ SIRET"
-    feature :champ_linked_dropdown,
-      title: "Champ double menu déroulant"
     feature :champ_integer_number,
       title: "Champ nombre entier"
   end